Fatigue

Fatigue Symptoms & Signs

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Symptoms & Signs

Tiredness is not a symptom that defines any one particular disease. Rather, tiredness can be a symptom of many different diseases and conditions. Causes of tiredness range from lack of sleep and over exercise to medical and surgical treatments. The lack of energy associated with tiredness can sometimes cause difficulty with normal daily activities, leading to problems with attentiveness and concentration.

Fatigue, in medical terminology, refers to the state of reduced capacity for work or accomplishment following a period of mental or physical activity. For example, muscles fatigue if the are called upon to repetitively work for an extended period. Most of the causes of tiredness are also associated with fatigue.

Summary of Common Fatigue Symptoms by MedicineNet Staff
A review of our Patient Comments indicated that people with fatigue may also have coexisting symptoms. Patients indicated that they had difficulty functioning because they felt like they were carrying a heavy weight or they felt depressed. Others experienced weight loss, sweating, and diarrhea. Read on to learn more about fatigue symptoms in our Patient Comments.

Medically Reviewed by a Doctor on 2/24/2012

Health concern on your mind? Visit the Symptom Checker.

REFERENCE:

Fauci, Anthony S., et al. Harrison's Principles of Internal Medicine. 17th ed. United States: McGraw-Hill Professional, 2008.

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      In This Article
      Head and Neck Cancer Article
      • Head and neck cancer facts*
      • What is cancer?
      • What kinds of cancers are considered cancers of the head and neck?
      • How common are head and neck cancers?
      • What causes head and neck cancers?
      • What are common symptoms of head and neck cancers?
      • How are head and neck cancers diagnosed?
      • What health professionals treat patients with head and neck cancers?
      • How are head and neck cancers treated?
      • Are clinical trials (research studies) available for patients with head and neck cancers?
      • What rehabilitation or support options are available for patients with head and neck cancers?
      • Is follow-up treatment necessary? What does it involve?
      • What can people who have had head and neck cancer do to reduce the risk of developing a second primary (new) cancer?
    • Headache Headaches can be divided into two categories: primary headaches and secondary headaches. Migraine headaches, tension headaches,...learn more »
      In This Article
      Headache Article
      • Headache definition and facts
      • What is a headache?
      • How are headaches classified?
      • What are primary headaches?
      • What are secondary headaches?
      • What are cranial neuralgias, facial pain, and other headaches?
      • 17 types of headaches
      • What causes headaches?
      • What causes tension headaches?
      • What are the signs and symptoms of tension headaches?
      • How are tension headaches diagnosed?
      • How are tension headaches treated?
      • What causes cluster headaches?
      • What are the symptoms of cluster headaches?
      • How are cluster headaches diagnosed?
      • How are cluster headaches treated?
      • Can cluster headaches be prevented?
      • What diseases cause secondary headaches?
      • How are secondary headaches diagnosed?
      • What are the exams and tests for secondary headaches?
      • When should I seek medical care for a headache?
      • How do you get rid of a headache? Are home remedies effective for headaches?
    • Heart Attack Heart attack happens when a blood clot completely obstructs a coronary artery supplying blood to the heart muscle. A heart attack...learn more »
      In This Article
      Heart Attack Article
      • Heart attack facts
      • What is a heart attack?
      • What causes a heart attack?
      • What are the symptoms of a heart attack?
      • What are the complications of a heart attack?
      • What are the risk factors for atherosclerosis and heart attack?
      • How is a heart attack diagnosed?
      • What is the treatment for heart attack?
      • What are the risk factors for heart attack in women?
      • What are the symptoms of heart attack in women and how is heart attack diagnosed?
      • How is heart attack in women treated?
      • What about hormone therapy and heart attack in women?
      • What is new in heart attack?
    • Heart Attack Treatment A heart attack involves damage or death of part of the heart muscle due to a blood clot. The aim of heart attack treatment is to...learn more »
      In This Article
      Heart Attack Treatment Article
      • What is a heart attack?
      • How is a heart attack treated?
      • Antiplatelet agents
      • Aspirin
      • Thienopyridines
      • Glycoprotein IIb/IIIa inhibitors
      • Anticoagulants
      • Clot-dissolving drugs
      • Coronary angiography and percutaneous transluminal coronary angioplasty (PTCA)
      • Coronary artery stents
      • Nitrates
      • Angiotensin converting enzyme (ACE) inhibitors
      • Beta blockers
      • Oxygen
      • Coronary artery bypass
      • What can a patient expect during recovery from a heart attack?
      • How can a second heart attack be prevented?
    • Hereditary Angioedema (HAE) Hereditary angioedema or HAE is a genetic disease that causes swelling of the skin and tissues beneath it. Symptoms of HAE...learn more »
      In This Article
      Hereditary Angioedema (HAE) Article
      • Hereditary angioedema (HAE) definition and facts:
      • What is hereditary angioedema (HAE)?
      • What are the symptoms of hereditary angioedema (HAE)?
      • What are the types or forms of hereditary angioedema (HAE)?
      • What causes hereditary angioedema (HAE)?
      • What triggers hereditary angioedema (HAE)?
      • What about pregnancy and hereditary angioedema (HAE)?
      • Which specialties of doctors treat hereditary angioedema (HAE)?
      • How is hereditary angioedema (HAE) diagnosed?
      • What are the treatment guidelines for hereditary angioedema (HAE)?
      • How can a person with hereditary angioedema (HAE) avoid triggers and manage the disease?
      • Tips for managing and living with hereditary angioedema (HAE)
      • What are the complications of hereditary angioedema (HAE)?
      • What is the prognosis for a person with hereditary angioedema (HAE)?
    • Hodgkin's Disease Hodgkin's disease is a cancer of the lymphatic system with symptoms that include unexplained, recurring fevers, unexplained...learn more »
      In This Article
      Hodgkin's Disease Article
      • Hodgkin's lymphoma facts*
      • What is the lymph system?
      • What is Hodgkin's lymphoma?
      • What are the types of Hodgkin's lymphoma?
      • How is the staging determined for Hodgkin's lymphoma?
      • What are the stages of Hodgkin's lymphoma?
      • What is the treatment for Hodgkin's lymphoma?
      • Who are the doctor's who treat Hodgkin's lymphoma?
      • How do people get a second opinion for Hodgkin's lymphoma?
      • Clinical trials for treatment of Hodgkin's lymphoma
      • Chemotherapy for Hodgkin's lymphoma
      • Targeted therapy for Hodgkin's lymphoma
      • Radiation therapy for Hodgkin's lymphoma
      • Stem cell transplantation for Hodgkin's lymphoma
      • Nutrition during cancer treatment
      • What is the follow-up care after treatment for Hodgkin's lymphoma?
      • What other support is available for cancer patients?
    • Human Immunodeficiency Virus (HIV) The human immunodeficiency virus (HIV) causes HIV infection and the acquired immunodeficiency syndrome (AIDS). Symptoms and signs...learn more »
      In This Article
      Human Immunodeficiency Virus (HIV) Article
      • Human immunodeficiency virus (HIV) facts
      • What is the history of HIV, and when was HIV discovered?
      • What tests are used in the diagnosis of HIV?
      • How is HIV spread (transmitted)?
      • What are symptoms and signs of HIV infection and AIDS in men, women, and children?
      • What happens after an exposure to the blood or genital secretions of an HIV-infected person?
      • What laboratory tests are used to monitor HIV-infected people?
      • What are HIV treatments and medications? What are the key principles in managing HIV infection?
      • When should antiviral therapy be started?
      • What is the initial therapy for HIV?
      • What are nucleoside and nucleotide analogue reverse transcriptase inhibitors (NRTIs)?
      • What are nonnucleoside analogue reverse transcriptase inhibitors (NNRTIs)?
      • What are protease inhibitors?
      • What are fusion inhibitors?
      • What is a CCR5 antagonist?
      • What is an integrase strand transfer inhibitor?
      • What HIV drugs are in development?
      • What are side effects of HIV therapy?
      • What happens if the patient's viral load increases while on HIV therapy?
      • What are the risks of missing doses or stopping antiviral therapy?
      • Should patients with the flu- or mono-like illness of primary HIV infection be treated?
      • What about treatment for HIV during pregnancy?
      • What can be done for people who have severe immunosuppression?
      • What is the future for HIV-infected individuals with regards to treatment simplification and cure research?
      • What is in the future for preventing HIV transmission?
    • Hypothyroidism Hypothyroidism is any state in which thyroid hormone production is below normal. Normally, the rate of thyroid hormone...learn more »
      In This Article
      Hypothyroidism Article
      • Hypothyroidism definition and facts
      • What is hypothyroidism?
      • Where is the thyroid located, and what are thyroid hormones?
      • What are the symptoms of hypothyroidism?
      • How do thyroid hormones work?
      • What causes hypothyroidism?
      • How is hypothyroidism diagnosed?
      • How is hypothyroidism treated?
      • What is subclinical hypothyroidism?
      • What's best for you?
    • Infectious Mononucleosis Infectious mononucleosis is a virus infection in which there is an increase of white blood cells that are mononuclear (with a...learn more »
      In This Article
      Infectious Mononucleosis Article
      • Infectious mononucleosis (mono) facts
      • What is infectious mononucleosis?
      • What is the cause of mono?
      • What are the risk factors for mono?
      • How is mono transmitted or spread? What is the incubation period for mono? What is the contagious period for mono?
      • What are the symptoms of mono?
      • What are the signs of mono?
      • What tests do health-care professionals use to diagnose infectious mono?
      • What specialists treat infectious mono?
      • What is the usual course and treatment of mono?
      • What are the complications of mono?
      • What is the prognosis of mono?
      • Is it possible to prevent mono?
      • Conclusion
    • Iron Deficiency Iron is a mineral our bodies need. Iron deficiency is a condition resulting from not enough iron in the body. It is the most...learn more »
      In This Article
      Iron Deficiency Article
      • Iron and iron deficiency facts*
      • What is iron and why do we need it?
      • What is iron deficiency and why is it a concern?
      • What causes iron deficiency?
      • Who is most at risk for iron deficiency?
      • What are the signs and symptoms of iron deficiency?
      • How is iron deficiency diagnosed?
      • How is iron deficiency treated?
      • Can iron deficiency be prevented?
      • Babies
      • Young children (aged 1-5 years)
      • Adolescent girls and women of childbearing age
      • Pregnant women
      • How much iron do I need?
      • What are dietary sources of iron?
      • Dietary sources of Vitamin C
      • Iron overload and hemochromatosis
    • Is a Sinus Infection Contagious? Sinus infection (sinusitis) is infection (viral, bacterial, or fungal) or inflammation of the sinuses. Sympotms of sinus...learn more »
      In This Article
      Is a Sinus Infection Contagious? Article
      • Is a sinus infection contagious?
      • How will I know if I have a sinus infection?
      • How is sinusitis spread?
      • How will I know if I am cured of a sinus infection?
      • When should I contact a health-care professional about sinusitis?
    • Is Chickenpox Contagious? Chickenpox is an infectious disease caused by the varicella zoster virus. Chickenpox symptoms and signs include a blistering,...learn more »
      In This Article
      Is Chickenpox Contagious? Article
      • What is chickenpox?
      • Is chickenpox contagious?
      • How will someone know that he or she has chickenpox?
      • How is chickenpox transmitted?
      • How will someone know when he or she is cured of chickenpox?
      • When should someone contact a medical provider about chickenpox?
    • Is Lyme Disease Contagious? Lyme disease may be transmitted to humans via the bite of an infected tick. The bacterium Borrelia burgdorferi causes the disease...learn more »
      In This Article
      Is Lyme Disease Contagious? Article
      • What is Lyme disease?
      • Is Lyme disease contagious?
      • How will I know if I have Lyme disease?
      • How is Lyme disease transmitted?
      • When will I know I am cured of Lyme disease? How long does Lyme disease last?
      • When should I contact a medical caregiver about Lyme disease?
    • Is Mononucleosis (Mono) Contagious? Mononucleosis (mono) is caused by the Epstein-Barr virus and can be transmitted by an infected person's saliva. Mono symptoms and...learn more »
      In This Article
      Is Mononucleosis (Mono) Contagious? Article
      • What is mono (mononucleosis)?
      • Is mono contagious?
      • How do I know if I have mono?
      • How is mono transmitted? What is the incubation period for mono?
      • When will I know I am cured of mono?
      • When should I contact a health-care professional about mono?
    • Is Pneumonia Contagious? Pneumonia is inflammation of the lung usually caused by bacterial or viral infection (rarely, also by fungi) that causes the air...learn more »
      In This Article
      Is Pneumonia Contagious? Article
      • What is pneumonia?
      • Is pneumonia contagious?
      • When is pneumonia contagious?
      • What is the incubation period for pneumonia?
      • Can pneumonia spread?
      • How long is pneumonia contagious?
      • When should someone seek medical care for pneumonia?
    • Is Swine Flu (H1N1) Contagious? Swine flu (H1N1) is a contagious virus that spreads when an infected individual expels virus-containing droplets into the air...learn more »
      In This Article
      Is Swine Flu (H1N1) Contagious? Article
      • What is swine flu?
      • Is swine flu (H1N1) contagious?
      • What is the contagious period for swine flu (H1N1)?
      • How will I know if I have swine flu?
      • How is swine flu transmitted?
      • How will I know if I am cured of swine flu?
      • When should I contact medical caregiver about swine flu (H1N1)?
    • Is the Ebola Virus Contagious? Ebola hemorrhagic fever is a highly contagious disease that is transmitted through direct contact. Ebola's incubation period...learn more »
      In This Article
      Is the Ebola Virus Contagious? Article
      • What is Ebola?
      • Is Ebola contagious?
      • What is the incubation period for the Ebola virus?
      • How will I know if someone is infected with Ebola?
      • How is the Ebola virus transmitted?
      • How will I know if someone is cured of Ebola? What is the contagious period for Ebola?
      • When should I contact a medical caregiver about Ebola?
    • Is Whooping Cough (Pertussis) Contagious? Whooping cough (pertussis) is a highly contagious respiratory infection caused by Bordetella pertussis. Pertussis is...learn more »
      In This Article
      Is Whooping Cough (Pertussis) Contagious? Article
      • What is whooping cough (pertussis)?
      • Is whooping cough contagious?
      • How will I know if someone has whooping cough? What are the various stages of pertussis?
      • How is whooping cough transmitted? What is the incubation period for pertussis? What is the contagious period for pertussis?
      • When will I know someone is cured of whooping cough?
      • When should I contact a medical caregiver about whooping cough?
    • Jet Lag Jet lag (desynchonosis) is a temporary disorder that results from travel across time zones. Symptoms include anxiety,...learn more »
      In This Article
      Jet Lag Article
      • What is jet lag?
      • What are other symptoms and signs of jet lag?
      • How long does jet lag last?
      • What is a time zone?
      • What causes jet lag?
      • How does the body keep time?
      • Does the direction of travel matter?
      • Do the symptoms of jet lag vary in intensity?
      • What are risk factors for jet lag?
      • Are there any remedies for jet lag? Is it possible to prevent jet lag?
      • What is the treatment for jet lag?
      • Are there effective medications for jet lag? What is the role of melatonin in jet lag?
    • Juvenile Idiopathic Arthritis (Juvenile Rheumatoid Arthritis) Juvenile idiopathic arthritis (juvenile rheumatoid arthritis or JRA) annually affects one child in every thousand. There are six...learn more »
      In This Article
      Juvenile Idiopathic Arthritis (Juvenile Rheumatoid Arthritis) Article
      • Juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA) facts
      • What is juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA)?
      • What are the types of juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA)?
      • What are causes and risk factors of juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA) arthritis?
      • What specialists treat juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA)?
      • What are juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA) symptoms and signs, and how are the different types of juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA) diagnosed?
      • What is the treatment for juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA)? What medications treat JIA/JRA?
      • What are complications of juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA)?
      • What is the prognosis of juvenile idiopathic arthritis (JIA)/juvenile rheumatoid arthritis (JRA)?
    • Kidney Cancer There are several types of kidney cancer, including renal cell cancer (renal adenocarcinoma or hypernephroma), transitional cell...learn more »
      In This Article
      Kidney Cancer Article
      • Kidney cancer facts*
      • What are the kidneys?
      • What is cancer?
      • What are kidney cancer causes and risk factors?
      • What are kidney cancer symptoms and signs?
      • How is kidney cancer diagnosed?
      • How is kidney cancer staging determined?
      • What are kidney cancer treatments?
      • Targeted Therapy
      • Biological Therapy
      • Second Opinion
      • Nutrition
      • Follow-up Care
      • Sources of Support
      • Taking Part in Cancer Research
    • Kidney Failure Kidney failure can occur from an acute event or a chronic condition or disease. Prerenal kidney failure is caused by blood loss,...learn more »
    • Leukemia Leukemia is a type of cancer of the blood cells in which the growth and development of the blood cells are abnormal. Strictly...learn more »
      In This Article
      Leukemia Article
      • Leukemia facts
      • What is leukemia? What are the different types of leukemia?
      • What causes leukemia? Is leukemia hereditary?
      • What are leukemia risk factors?
      • What are leukemia symptoms and signs?
      • How do physicians diagnose leukemia?
      • What is the treatment for leukemia?
      • What are complications of leukemia?
      • What is the prognosis of leukemia?
      • Is it possible to prevent leukemia?
      • What support groups are available for people with leukemia?
      • What research is being done on leukemia?
    • Liver (Anatomy and Function) The liver is the largest gland and organ in the body. There are a variety of liver diseases caused by liver inflammation,...learn more »
      In This Article
      Liver (Anatomy and Function) Article
      • Facts about the liver
      • What is the function of the liver?
      • What are symptoms of liver diseases?
      • What does the liver look like, and where is it located in the body?
      • Liver disease causes (fatty liver, cirrhosis, hepatitis, and infections)
      • Liver disease causes (medications, toxins, genetics, cancer, and others)
      • What kind of doctor treats liver disease?
      • How is an examination of the liver performed?
      • What is a liver biopsy?
      • Can diseases of the liver be prevented?
    • Lung Cancer Lung cancer kills more men and women than any other form of cancer. Eight out of 10 lung cancers are due to tobacco smoke. Lung...learn more »
    • Lupus (Systemic Lupus Erythematosus or SLE) Systemic lupus erythematosus is a condition characterized by chronic inflammation of body tissues caused by autoimmune disease....learn more »
      In This Article
      Lupus (Systemic Lupus Erythematosus or SLE) Article
      • Systemic lupus erythematosus facts
      • What is systemic lupus erythematosus? What are the types of lupus?
      • What are risk factors and causes of systemic lupus erythematosus? Is lupus contagious? Is lupus hereditary?
      • What is drug-induced lupus?
      • What are lupus symptoms and signs?
      • How do health-care professionals diagnose systemic lupus erythematosus?
      • What specialties of doctors treat lupus?
      • What is the treatment for systemic lupus?
      • Is there a systemic lupus erythematosus diet?
      • How can a lupus patient help prevent disease activity (flares)?
      • How can systemic lupus erythematosus affect pregnancy or the newborn?
      • What is the prognosis of lupus? What does the future hold for people with systemic lupus?
      • Where can one get more information about systemic lupus erythematosus?
    • Lyme Disease Lyme disease is a bacterial illness, which is spread by ticks when they bite the skin. Initially the disease affects the skin...learn more »
    • Lymphedema Lymphedema is a condition in which one or more extremities become swollen as the result of an impaired flow of the lymphatic...learn more »
      In This Article
      Lymphedema Article
      • Lymphedema facts
      • What is lymphedema?
      • What does lymphedema look like (pictures)?
      • What causes lymphedema?
      • What are the symptoms of lymphedema?
      • How is lymphedema diagnosed?
      • What are possible treatments for lymphedema?
      • What are complications of lymphedema?
      • Can lymphedema be prevented?
      • What is the prognosis for lymphedema?
      • Where can one get help and support for lymphedema?
    • Marfan Syndrome Marfan syndrome is hereditary condition affecting connective tissue. A person with Marfan syndrome may exhibit the following...learn more »
      In This Article
      Marfan Syndrome Article
      • Marfan syndrome facts*
      • What is Marfan syndrome?
      • What are the symptoms of Marfan syndrome?
      • What causes Marfan syndrome?
      • How is Marfan syndrome diagnosed?
      • What types of doctors treat Marfan syndrome?
      • What treatment options are available for Marfan syndrome?
      • What are some of the emotional and psychological effects of Marfan syndrome?
      • What research is being conducted on Marfan syndrome?
      • Where can people find additional information about Marfan syndrome?
    • MELAS Syndrome MELAS syndrome, a rare form of dementia, stands for Mitochondrial Encephalopathy, Lactic Acidosis, and Stroke-like episodes....learn more »
      In This Article
      MELAS Syndrome Article
      • What is MELAS?
      • What causes MELAS?
      • What are the symptoms of MELAS?
      • How is MELAS diagnosed?
      • When do people with MELAS develop symptoms?
      • How is MELAS treated?
      • Are there other mitochondrial diseases?
    • Meningococcemia Meningococcemia is a bloodstream infection caused by Neisseria meningitides. Meningococcemia symptoms include fever, headache,...learn more »
      In This Article
      Meningococcemia Article
      • Meningococcemia facts
      • What is meningococcemia?
      • What causes meningococcemia?
      • What are risk factors for meningococcemia?
      • What are symptoms and signs of meningococcemia?
      • How is meningococcemia diagnosed?
      • What is the treatment for meningococcemia?
      • What is the prognosis of meningococcemia?
      • Is it possible to prevent meningococcemia?
      • Where can people find more information on meningococcemia?
    • Menopause Menopause is the time in a woman's life when menstrual periods permanently stop, also called the "change of life." Menopause...learn more »
    • Migraine Headache Migraine headaches are severe headaches that are accompanies to sensitivity to light, sounds, and smells. They are often...learn more »
      In This Article
      Migraine Headache Article
      • Migraine headache facts
      • What is a migraine?
      • What are migraine triggers?
      • What causes migraines?
      • What are the risk factors for migraine?
      • What are the signs and symptoms of migraines?
      • How are migraines diagnosed?
      • What is the treatment for migraines?
      • Migraine medications
      • What self-care treatment and lifestyle changes work for migraines?
      • How are migraines managed during pregnancy?
      • How are migraines managed in children?
      • What is the prognosis for migraines?
      • Can migraines be prevented?
    • Multiple Myeloma Multiple myeloma is a form of cancer that develops in plasma cells, the white blood cells that make antibodies. Symptoms include...learn more »
      In This Article
      Multiple Myeloma Article
      • Multiple myeloma facts
      • What is multiple myeloma?
      • What causes multiple myeloma?
      • What are risk factors for multiple myeloma?
      • What are multiple myeloma symptoms and signs?
      • How do health-care professionals diagnose multiple myeloma?
      • What types of specialists treat multiple myeloma?
      • What are the stages of multiple myeloma?
      • What is the treatment for multiple myeloma?
      • What is the prognosis for multiple myeloma? What is the survival rate for multiple myeloma?
      • Is it possible to prevent multiple myeloma?
      • What support systems are available for multiple myeloma?
    • Multiple Sclerosis (MS) Multiple sclerosis or MS is an autoimmune disorder in which brain and spinal cord nerve cells become demyelinated. This damage...learn more »
    • Myasthenia Gravis Myasthenia gravis, a chronic autoimmune neuromuscular disease. Varying degrees of weakness of the voluntary muscles of the body...learn more »
      In This Article
      Myasthenia Gravis Article
      • Myasthenia gravis facts*
      • What is myasthenia gravis?
      • What causes myasthenia gravis?
      • What is the role of the thymus gland in myasthenia gravis?
      • What are myasthenia gravis symptoms and signs?
      • Who gets myasthenia gravis?
      • How is myasthenia gravis diagnosed? What tests are used?
      • What is the treatment for myasthenia gravis?
      • What are myasthenic crises?
      • What is the prognosis for myasthenia gravis?
      • What research is being done on myasthenia gravis?
      • Where can I get more information on myasthenia gravis?
    • Nausea and Vomiting Nausea is an uneasiness of the stomach that often precedes vomiting. Nausea and vomiting are not diseases, but they are symptoms...learn more »
      In This Article
      Nausea and Vomiting Article
      • Nausea and vomiting facts
      • Introduction to nausea and vomiting
      • What causes nausea or vomiting?
      • Acute gastritis and nausea and vomiting
      • Central causes of nausea and vomiting
      • Nausea and vomiting associated with illness
      • Nausea and vomiting from medications and medical treatments
      • Nausea and vomiting and bowel obstruction
      • Nausea and vomiting in pregnancy (morning sickness)
      • Vomiting in infants
      • What are home remedies for nausea or vomiting?
      • When should I call the doctor regarding nausea and vomiting?
      • How is the source of nausea or vomiting diagnosed?
      • What is the treatment for nausea or vomiting?
    • NDM-1 NDM-1 (New Delhi metallo-beta-lactamase) is an enzyme produced by certain strains of bacteria that have recently acquired the...learn more »
      In This Article
      NDM-1 Article
      • NDM-1 facts
      • What is NDM-1?
      • What causes NDM-1 to be produced in bacteria?
      • What are symptoms and signs of a person infected with bacteria carrying NDM-1?
      • How are bacteria that produce NDM-1 identified?
      • What is the treatment for an infection caused by bacteria that make NDM-1?
      • What is the prognosis for a person infected with NDM-1 producing bacteria?
      • Can infections with bacteria containing NDM-1 be prevented?
      • Where can people find more information about NDM-1 producing bacteria?
    • Non-Hodgkin's Lymphoma Non-Hodgkin's lymphoma is cancer of the lymphatic system, a vital part of the body's immune system. Symptoms and signs include...learn more »
      In This Article
      Non-Hodgkin's Lymphoma Article
      • Non-Hodgkin's lymphoma facts
      • What is non-Hodgkin's lymphoma?
      • What is the difference between non-Hodgkin's lymphoma and Hodgkin's disease (or Hodgkin's lymphoma)?
      • What causes non-Hodgkin's lymphoma?
      • What are non-Hodgkin's lymphoma risk factors?
      • What are non-Hodgkin's lymphoma symptoms and signs?
      • What kind of doctors treat non-Hodgkin's lymphoma?
      • How do physicians diagnose non-Hodgkin's lymphoma?
      • What are the types of non-Hodgkin's lymphoma, and how is non-Hodgkin's lymphoma staging determined?
      • What is the treatment for non-Hodgkin's lymphoma?
      • What is the prognosis and survival rate for non-Hodgkin's lymphoma?
      • Is it possible to prevent non-Hodgkin's lymphoma?
      • Where can people find more information about non-Hodgkin's lymphoma?
    • Norovirus Infection Norovirus infection causes stomach flu, or gastroenteritis. It's a very contagious illness with symptoms that include nausea and...learn more »
    • Ovarian Cancer There are many types of ovarian cancer, epithelial carcinoma is the most common. Women with a family history of ovarian cancer...learn more »
      In This Article
      Ovarian Cancer Article
      • Ovarian cancer facts
      • What is ovarian cancer?
      • Epithelial ovarian cancer (EOC)
      • Ovarian low malignant potential tumor (OLMPT; borderline tumor)
      • Germ cell ovarian cancers
      • Stromal ovarian cancers
      • What are ovarian cancer statistics?
      • What are ovarian cancer risk factors?
      • What are ovarian cancer symptoms and signs?
      • How is ovarian cancer diagnosed?
      • How is ovarian cancer staging determined?
      • What is the treatment for ovarian cancer?
      • What is the survival rate and prognosis of ovarian cancer?
      • Can ovarian cancer be prevented?
      • How does one cope with ovarian cancer?
    • Pityriasis Rosea Pityriasis rosea is a rash that begins with a large pink patch with well-defined scaly borders on the back, chest, or neck. In...learn more »
      In This Article
      Pityriasis Rosea Article
      • Pityriasis rosea facts
      • What is pityriasis rosea?
      • Who gets pityriasis rosea?
      • What causes pityriasis rosea?
      • What are pityriasis rosea symptoms and signs?
      • How is pityriasis rosea diagnosed?
      • What are some common misdiagnoses of pityriasis rosea?
      • What is the treatment for pityriasis rosea?
      • What home remedies can I use for pityriasis rosea?
      • Is pityriasis rosea dangerous during pregnancy?
      • Can pityriasis rosea be prevented?
      • What is the prognosis for pityriasis rosea?
      • Where can I find more information and facts about pityriasis rosea?
    • Pneumonia Pneumonia is inflammation of the lungs caused by fungi, bacteria, or viruses. Symptoms and signs include cough, fever, shortness...learn more »
    • Postpartum Depression Postpartum depression is a form of depression that occurs within a year after delivery. It is thought that rapid hormone changes...learn more »
      In This Article
      Postpartum Depression Article
      • Postpartum depression facts
      • What is postpartum depression? Are there different types of postpartum depression?
      • What are causes and risk factors for postpartum depression?
      • What are postpartum depression symptoms and signs?
      • How is postpartum depression diagnosed?
      • What are the treatments for postpartum depression?
      • What is the prognosis of postpartum depression?
      • Can postpartum depression be prevented?
      • Where can people get more information about postpartum depression?
      • Where can people get support for postpartum depression?
      • What research is being done on postpartum depression?
    • Psoriatic Arthritis Psoriatic arthritis is a disease that causes skin and joint inflammation. Symptoms include painful, stiff, and swollen joints,...learn more »
      In This Article
      Psoriatic Arthritis Article
      • Psoriatic arthritis facts
      • What is psoriatic arthritis?
      • What causes psoriatic arthritis?
      • What are risk factors for developing psoriatic arthritis?
      • What are psoriatic arthritis symptoms and signs?
      • How does a doctor diagnose psoriatic arthritis?
      • What is the treatment for psoriatic arthritis?
      • Disease-modifying medications for psoriatic arthritis
      • What are psoriatic arthritis complications?
      • What is the prognosis of psoriatic arthritis?
      • Is it possible to prevent psoriatic arthritis?
      • Is there a psoriatic arthritis diet? Are there home remedies for psoriatic arthritis?
      • What types of doctors treat psoriatic arthritis?
      • What does the future hold for patients with psoriatic arthritis?
    • Q Fever Q fever is a highly infectious disease that causes high fever, diarrhea, cough, and sweating. Infected animals may transmit Q...learn more »
      In This Article
      Q Fever Article
      • Q fever facts
      • What is Q fever?
      • Where does the name Q fever come from? What causes Q fever?
      • How does Q fever spread?
      • What is the incubation period for Q fever?
      • Who is at risk for getting Q fever?
      • Are there different forms of Q fever?
      • Does pasteurization prevent the transmission of Q fever?
      • What are the signs and symptoms of Q fever?
      • What types of specialist treat Q fever?
      • How do physicians diagnose Q fever?
      • Is Q fever contagious?
      • What is the contagious period for Q fever?
      • What is the danger of getting Q fever while pregnant?
      • Is Q fever deadly?
      • What complications may arise with Q fever?
      • If it is not Q fever, what else could it be?
      • What should people do if they have been exposed to Q fever?
      • Is there any treatment for Q fever?
      • What is the prognosis for Q fever?
      • Is there a vaccine against Q fever?
      • Is Q fever a bioterrorism threat?
      • Where can people find more information about Q fever?
    • Relapsing Polychondritis Relapsing polychondritis is an uncommon, chronic disorder of the cartilage that is characterized by recurrent episodes of...learn more »
      In This Article
      Relapsing Polychondritis Article
      • Relapsing polychondritis facts
      • What is relapsing polychondritis?
      • What causes relapsing polychondritis?
      • What are symptoms and signs of relapsing polychondritis?
      • How is relapsing polychondritis diagnosed?
      • Can relapsing polychondritis be associated with other diseases?
      • What medications are used to treat relapsing polychondritis?
      • What is the long-term outlook (prognosis) for patients with relapsing polychondritis?
    • Rheumatoid Arthritis (RA) Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic inflammation of the joints, the tissue around the joints,...learn more »
      In This Article
      Rheumatoid Arthritis (RA) Article
      • Rheumatoid arthritis (RA) facts
      • What is rheumatoid arthritis (RA)?
      • Rheumatoid arthritis vs. osteoarthritis
      • What are rheumatoid arthritis causes and risk factors?
      • What are complications of rheumatoid arthritis?
      • What are rheumatoid arthritis symptoms and signs?
      • How do physicians diagnose rheumatoid arthritis?
      • What are the stages of rheumatoid arthritis?
      • What is the treatment for rheumatoid arthritis? What types of medications treat RA?
      • "First-line" rheumatoid arthritis medications
      • "Second-line" or "slow-acting" rheumatoid arthritis drugs (disease-modifying anti-rheumatic drugs or DMARDs)
      • What are newer rheumatoid arthritis treatments?
      • Rheumatoid arthritis diet, exercise, home remedies, and alternative medicine
      • What about rheumatoid arthritis and pregnancy?
      • What is the prognosis for patients with rheumatoid arthritis?
      • What are tips for living with rheumatoid arthritis?
      • Is it possible to prevent rheumatoid arthritis?
      • What specialists treat rheumatoid arthritis (RA)?
      • What new information about RA has come from the 2015 national meeting of the American College of Rheumatology?
      • What research is being done on rheumatoid arthritis?
      • Where can people get additional information on rheumatoid arthritis?
    • Rocky Mountain Spotted Fever (RMSF) Rocky Mountain spotted fever is a tick-borne disease that causes symptoms and signs such as fever, rash, headache, and muscle...learn more »
      In This Article
      Rocky Mountain Spotted Fever (RMSF) Article
      • Rocky Mountain spotted fever facts
      • What is Rocky Mountain spotted fever?
      • Where do most cases of RMSF occur in the U.S.?
      • What causes Rocky Mountain spotted fever?
      • How is Rocky Mountain spotted fever transmitted?
      • What are Rocky Mountain spotted fever risk factors?
      • Is Rocky Mountain spotted fever contagious?
      • What are Rocky Mountain spotted fever symptoms and signs?
      • What is the incubation period for Rocky Mountain spotted fever?
      • How do health-care providers diagnose Rocky Mountain spotted fever?
      • What is the treatment for Rocky Mountain spotted fever?
      • What is the prognosis of Rocky Mountain spotted fever?
      • What are the long-term effects of Rocky Mountain spotted fever?
      • Is there a vaccine for Rocky Mountain spotted fever?
      • Is it possible to prevent Rocky Mountain spotted fever?
    • Sarcoidosis Sarcoidosis, a disease resulting from chronic inflammation, causes small lumps (granulomas) to develop in a great range of body...learn more »
      In This Article
      Sarcoidosis Article
      • Sarcoidosis facts
      • What is sarcoidosis?
      • What are causes and risk factors of sarcoidosis?
      • What are signs and symptoms of sarcoidosis?
      • Who gets sarcoidosis?
      • What do we know about sarcoidosis? Is sarcoidosis contagious or hereditary?
      • What are some things we don't know about sarcoidosis?
      • What types of doctors treat sarcoidosis?
      • What tests do health-care professionals use to diagnose sarcoidosis?
      • What do laboratory tests for sarcoidosis show?
      • What is the treatment for sarcoidosis?
      • What is the prognosis of sarcoidosis?
      • Is it possible to prevent sarcoidosis?
      • Where can a person find more information on sarcoidosis?
    • Scarlet Fever (Scarlatina) Scarlet fever, a bacterial infection caused by group A Streptococcus bacteria, causes symptoms and signs such as fever, rash with...learn more »
      In This Article
      Scarlet Fever (Scarlatina) Article
      • Scarlet fever facts
      • What is scarlet fever?
      • What causes scarlet fever?
      • What is the incubation period for scarlet fever?
      • What are risk factors for scarlet fever?
      • What is the contagious period for scarlet fever?
      • What are scarlet fever symptoms and signs?
      • How do physicians diagnose scarlet fever?
      • What is the treatment for scarlet fever?
      • What are complications of scarlet fever?
      • What is the prognosis of scarlet fever? What are the long-term effects of scarlet fever?
      • Is it possible to prevent scarlet fever? Is there a scarlet fever vaccine?
    • Sick Building Syndrome Multiple chemical sensitivity (MCS) or also referred to as sick building syndrome or environmental illness is the name given by...learn more »
      In This Article
      Sick Building Syndrome Article
      • Sick building syndrome facts
      • What is sick building syndrome?
      • Why is sick building syndrome controversial?
      • What types of specialists treat sick building syndrome?
      • What causes sick building syndrome?
      • What are risk factors for sick building syndrome?
      • What are sick building syndrome symptoms and signs?
      • How is sick building syndrome diagnosed?
      • What is the treatment for sick building syndrome?
      • What are complications of sick building syndrome?
      • What is the prognosis of sick building syndrome?
      • Is there a way to prevent sick building syndrome?
    • Sjogren's Syndrome Sjögren's syndrome is an autoimmune disease involving the abnormal production of extra antibodies that attack the glands and...learn more »
      In This Article
      Sjogren's Syndrome Article
      • Sjögren's syndrome facts
      • What is Sjögren's syndrome?
      • What causes Sjögren's syndrome?
      • What are risk factors for developing Sjögren's syndrome?
      • What are Sjögren's syndrome symptoms and signs?
      • How is Sjögren's syndrome diagnosed?
      • What is the treatment for Sjögren's syndrome? Will dietary changes improve Sjögren's syndrome symptoms and signs?
      • What are complications of Sjögren's syndrome?
      • Is it possible to prevent Sjögren's syndrome?
      • What is the prognosis for patients with Sjögren's syndrome?
      • What types of doctors treat Sjögren's syndrome?
      • Conclusion
    • Sleep Apnea Sleep apnea is defined as a reduction or cessation of breathing during sleep. The three types of sleep apnea are central apnea,...learn more »
      In This Article
      Sleep Apnea Article
      • Sleep apnea facts
      • What is sleep apnea?
      • What are the types of sleep apnea?
      • What is central sleep apnea and what causes it?
      • What is obstructive sleep apnea and what causes it?
      • How common is obstructive sleep apnea?
      • What are obstructive sleep apnea symptoms?
      • What are some of the complications of sleep apnea?
      • How is obstructive sleep apnea diagnosed and evaluated?
      • What are the nonsurgical treatments for obstructive sleep apnea?
      • What are the surgical treatments for obstructive sleep apnea?
      • Why is it important to treat obstructive sleep apnea?
    • STDs in Men Sexually transmitted diseases (STDs) are infections transmitted during sexual contact. They may be caused by viruses, bacteria,...learn more »
      In This Article
      STDs in Men Article
      • STDS in men: Common infections and facts
      • What are sexually transmitted diseases (STDs)?
      • Who is at risk for STDs?
      • What causes STDs in men?
      • What are the signs and symptoms of STDs in men?
      • List of STDs in men
      • 1. Chlamydia
      • 2. Gonorrhea
      • 3. Trichomoniasis
      • 4. HIV
      • 5. Genital herpes
      • 6. Genital warts (HPV)
      • 7. Hepatitis
      • 8. Syphilis
      • 9. Zika virus
      • Which specialties of doctors treat STDs in Men?
      • How are STDs in men diagnosed?
      • What is the treatment for STDs in men?
      • What is the prognosis for STDs in men?
      • Can STDs in men be prevented?
    • Stress Stress occurs when forces from the outside world impinge on the individual. Stress is a normal part of life. However,...learn more »
      In This Article
      Stress Article
      • Stress facts
      • What is stress?
      • A brief history of stress
      • What are the signs and symptoms of poorly managed stress?
      • Who is most vulnerable to stress? What are the risk factors for stress?
      • Teen stress
      • What is the healthy response to stress?
      • How does the response to stress work?
      • What is the role of the hypothalamus-pituitary-adrenal (HPA) axis (grouping) in stress?
      • What is the role of the locus coeruleus in stress?
      • How do the connections in the brain work in stress?
      • What do we know about using (activating) and overusing our internal systems that respond to stress?
      • What are the effects of stress on medical and psychological conditions?
      • Conclusions about the effects of stress
      • What can people do for stress management? What are home remedies to combat stress symptoms?
      • What's in the future for stress?
    • Swine Flu Novel H1N1 influenza A virus infection (swine flu) is an infection that generally is transferred from an infected pig to a human,...learn more »
      In This Article
      Swine Flu Article
      • Swine flu (H1N1 and H3N2v influenza virus) facts
      • What is the swine flu?
      • How is swine flu transmitted? Is swine flu contagious?
      • What is the incubation period for swine flu?
      • What is the contagious period for swine flu?
      • How long does the swine flu last?
      • What causes swine flu?
      • Why is swine flu now infecting humans?
      • What are swine flu symptoms and signs?
      • What tests do health-care professionals use to diagnose swine flu?
      • What types of doctors treat swine flu?
      • What is the treatment for swine flu?
      • What is the history of swine flu in humans?
      • What are the risk factors for swine flu?
      • Can swine flu be prevented with a vaccine?
      • Can swine flu be prevented if the swine flu vaccine (or other flu strain vaccines) is not readily available?
      • Are there home remedies for swine flu?
      • Was swine flu (H1N1) a cause of an epidemic or pandemic in the 2009-2010 flu season?
      • What is the prognosis (outlook) and complications for patients who get swine flu?
      • Where can I find more information about swine flu (H1N1 and H3N2v)?
    • Teen Depression Depression in teenagers may be caused by many factors. Symptoms of teen depression include apathy, irresponsible behavior,...learn more »
      In This Article
      Teen Depression Article
      • Teen depression facts
      • What is teen depression?
      • What are causes and risk factors for depression in teenagers?
      • What are teen depression symptoms and signs?
      • What are warning signs for teen suicide?
      • How is depression in teens diagnosed?
      • What is the treatment for teen depression?
      • What are complications of teen depression?
      • What is the prognosis of teen depression?
      • Is it possible to prevent teen depression?
      • What can family members and friends do to help a depressed teen?
      • Where can teens get support for depression?
    • Tension Headache A tension headache s one of the most common types of headaches, and the exact cause is not known. Factors that may contribute to...learn more »
      In This Article
      Tension Headache Article
      • Tension headache facts
      • What is a tension headache?
      • What causes tension headaches?
      • What are the symptoms of tension headache?
      • How are tension headaches diagnosed?
      • What is the treatment for tension headache?
      • Prescription medications for tension headaches
      • OTC drugs for tension headaches
      • Managing stress
      • Are there effective home remedies a cure for tension headache?
      • Can tension headaches be prevented?
    • Thoracic Outlet Syndrome (TOS) Thoracic outlet syndrome is a condition where symptoms are produced from compression of nerves or blood vessels because the...learn more »
      In This Article
      Thoracic Outlet Syndrome (TOS) Article
      • Thoracic outlet syndrome facts
      • What is thoracic outlet syndrome?
      • What causes thoracic outlet syndrome?
      • What are thoracic outlet syndrome risk factors?
      • What are thoracic outlet syndrome symptoms and signs?
      • What tests do physicians use to diagnose thoracic outlet syndrome?
      • What is the treatment for thoracic outlet syndrome? What are medications for thoracic outlet syndrome? Is surgery necessary for TOS?
      • What are home remedies for thoracic outlet syndrome?
      • What types of doctors treat thoracic outlet syndrome?
      • What is the prognosis for thoracic outlet syndrome?
      • Is it possible to prevent thoracic outlet syndrome?
    • Thymoma Thymoma is an uncommon cancer of the thymus gland. Many thymomas are asymptomatic. When symptoms do occur, they include chest...learn more »
      In This Article
      Thymoma Article
      • Thymoma facts
      • What is thymoma?
      • What causes thymoma, and what are risk factors for thymoma?
      • What are signs and symptoms of thymoma?
      • What other medical conditions are associated with thymoma?
      • How is thymoma diagnosed?
      • What are the stages of thymoma?
      • What is the treatment for thymoma?
      • What is the prognosis for thymoma?
      • Can thymoma be prevented?
    • Tuberculosis (TB) Mycobacterium tuberculosis is the bacterium that causes tuberculosis (TB). Symptoms and signs of TB include bloody sputum, fever,...learn more »
      In This Article
      Tuberculosis (TB) Article
      • Tuberculosis (TB) facts
      • What is tuberculosis?
      • Are there different types of tuberculosis (TB)?
      • What causes tuberculosis?
      • What are risk factors for tuberculosis?
      • What are tuberculosis symptoms and signs?
      • Is TB contagious, and how long is the incubation period and contagious period?
      • How do physicians diagnose tuberculosis?
      • What is the treatment for tuberculosis?
      • What types of doctors treat TB?
      • What are complications of tuberculosis?
      • What is the prognosis of tuberculosis?
      • How can people prevent tuberculosis?
    • Tularemia Tularemia (rabbit fever) is an infection caused by the Francisella tularensis bacteria. People can become infected with tularemia...learn more »
      In This Article
      Tularemia Article
      • Tularemia facts
      • What is tularemia?
      • What are the different types of tularemia?
      • What causes tularemia?
      • What are risk factors for tularemia?
      • What are tularemia symptoms and signs?
      • Is tularemia contagious, and what is the contagious period for tularemia?
      • What is the incubation period for tularemia?
      • What types of specialists treat tularemia?
      • How do health-care professionals diagnose tularemia?
      • What is the treatment for tularemia?
      • Are there home remedies for tularemia?
      • Is there a vaccine for tularemia?
      • What is the prognosis for tularemia?
      • Tularemia and bioterrorism
      • Where can people find more information about tularemia?
    • Type 2 Diabetes People with type 2 diabetes still produce insulin, but it is not adequate for their body's needs. Causes of type 2 diabetes are:...learn more »
      In This Article
      Type 2 Diabetes Article
      • Type 2 diabetes facts
      • What is type 2 diabetes?
      • What is the difference between type 2 and type 1 diabetes?
      • What causes diabetes type 2?
      • What are the risk factors for type 2 diabetes?
      • What are type 2 diabetes symptoms?
      • How is type 2 diabetes diagnosed?
      • What is the treatment for type 2 diabetes?
      • Do people with type 2 diabetes have to take insulin?
      • Type 2 diabetes medications
      • Type 2 diabetes diet
      • Exercise for type 2 diabetes
      • What are the complications of type 2 diabetes?
      • What if I have type 2 diabetes and become pregnant?
      • Can type 2 diabetes be prevented?
      • What is the life-expectancy for someone with type 2 diabetes?
    • Vasculitis Vasculitis is a general term for a group of uncommon diseases which feature inflammation of the blood vessels. Each form of...learn more »
      In This Article
      Vasculitis Article
      • Vasculitis facts
      • What is vasculitis?
      • What causes vasculitis, and what are examples of diseases with vasculitis?
      • What are the symptoms of vasculitis?
      • How is vasculitis diagnosed?
      • How is vasculitis treated?
    • Viral Hemorrhagic Fever Viral hemorrhagic fever(s), or VHFs are a group of illnesses caused by distinct families of viruses. Many of these viruses are...learn more »
      In This Article
      Viral Hemorrhagic Fever Article
      • Viral hemorrhagic fever (VHF) facts*
      • What are viral hemorrhagic fevers?
      • How are hemorrhagic fever viruses grouped?
      • What carries viruses that cause viral hemorrhagic fevers?
      • Where are cases of viral hemorrhagic fever found?
      • How are hemorrhagic fever viruses transmitted?
      • What are the symptoms and signs of viral hemorrhagic fever illnesses?
      • How are patients with viral hemorrhagic fever treated?
      • How can cases of viral hemorrhagic fever be prevented and controlled?
      • What needs to be done to address the threat of viral hemorrhagic fevers?
    • West Nile Virus West Nile virus (West Nile encephalitis) is a brain infection caused by a virus. People become infected with the virus after...learn more »
      In This Article
      West Nile Virus Article
      • West Nile virus facts
      • What is the history of West Nile virus?
      • Where did the West Nile virus come from?
      • How do people get West Nile virus?
      • How do mosquitoes get infected with the West Nile virus?
      • Is the West Nile virus contagious?
      • Besides mosquitoes, can other insects transmit the West Nile virus?
      • Are there other viruses like the West Nile virus?
      • What are West Nile virus infection symptoms and signs?
      • When is there an increased risk for West Nile virus infection?
      • Who is at risk for getting a West Nile virus infection?
      • What is the treatment for West Nile virus? Is it possible to prevent West Nile virus infection with a vaccine?
      • Is a woman's pregnancy at risk if she gets infected with the West Nile virus?
      • What can a community do to reduce the risk of an outbreak of the West Nile virus?
      • What can a person do to reduce the risk of becoming infected with the West Nile virus?
Other Causes of Fatigue and Tiredness


Symptoms & Signs A-Z List