Insomnia

Symptom Checker: Symptoms & Signs Index

Medical Author:

Related
Symptoms & Signs

Insomnia is the perception of inadequate or poor-quality sleep. It can be due to problems falling asleep, early wakening, waking frequently during the night, unrefreshing sleep, or a combination of these. Contrary to some popular beliefs, insomnia is not defined by the total amount of sleep one gets or how long it takes a person to fall asleep. Individuals can vary in their need for sleep, and in the time required to fall asleep. What is a refreshing night's sleep for one person might be insomnia for another person.

Insomnia may be classified by how long the symptoms are present. Temporary insomnia (transient insomnia) usually is due to situational changes, such as travel and stressful events. It lasts for less than a week or until the stressful event is resolved. Short-term insomnia lasts for one to three weeks, and long-term insomnia (chronic insomnia) continues for more than three weeks. Insomnia may also be classified as primary or secondary. Primary insomnia occurs in the absence of other medical problems, while secondary insomnia occurs as a result of a medical condition such as heart disease, arthritis, cancer, or heartburn causing wakefulness.

Insomnia is more likely to occur in females, people over 60 years of age, and people who have a history of depression, however, anyone can be affected by insomnia. Short-term insomnia may also occur as a side effect of certain medications. Chronic insomnia is more serious and may be caused or worsened by a variety of mental and physical problems.

Although sedative medications may be prescribed by a doctor for severe cases of insomnia, their use is controversial in management of long-term insomnia. Many treatments for insomnia are behavioral in nature; for example, identifying and reducing behaviors that worsen the insomnia or learning and practicing relaxation techniques. Insomnia can be particularly devastating because it often leads to a "vicious cycle" of daytime behaviors that worsen the condition. Persons without adequate sleep can experience tiredness, lack of energy, and concentration problems; which they may attempt to overcome by excessive caffeine intake or nicotine use. Insomniacs may be "too tired" to exercise and take afternoon naps, both of which reduce the ability to fall asleep the following night.

Medically Reviewed by a Doctor on 3/6/2012

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.

Main Article on Insomnia
  • Insomnia Insomnia is the perception or complaint of inadequate or poor-quality sleep because of difficulty falling asleep; waking up...learn more »
Causes of Insomnia
    • Alcoholism Alcoholism is a disease that includes alcohol craving and continued drinking despite repeated alcohol-related problems, such as...learn more »
      In This Article
      Alcoholism Article
      • Alcohol use disorder facts
      • What is alcohol abuse?
      • What is alcoholism?
      • What differentiates alcohol abuse from alcoholism?
      • What are risk factors for alcoholism?
      • What causes alcoholism? Is alcoholism hereditary?
      • What are alcohol use disorder symptoms and signs in teenagers, women, men, and the elderly?
      • How do physicians diagnose alcohol use disorder?
      • What are the stages of alcohol use disorder?
      • What is the treatment for alcohol use disorder?
      • What medications treat alcohol use disorder?
      • How can you tell if someone has a drinking problem?
      • Can an alcoholic just cut back or stop drinking?
      • Is there a safe level of drinking?
      • Is it safe to drink alcohol while pregnant?
      • How can someone find more information or get help or support to treat alcohol use disorder?
      • What are the long-term physical and psychological effects of alcohol use disorder?
      • What is codependency, and what is the treatment for codependency?
      • Is it possible to prevent alcohol use disorder?
      • What is the prognosis of alcohol use disorder?
    • Allergy (Allergies) An allergy refers to a misguided reaction by our immune system in response to bodily contact with certain foreign substances. ...learn more »
    • Anxiety Anxiety is a feeling of apprehension and fear characterized by physical symptoms. Anxiety disorders are serious medical illnesses...learn more »
      In This Article
      Anxiety Article
      • Generalized anxiety disorder facts
      • What is generalized anxiety disorder (GAD)?
      • What are the different types of anxiety?
      • How common is generalized anxiety disorder?
      • What are causes and risk factors for anxiety?
      • What are anxiety symptoms and signs?
      • How is generalized anxiety disorder diagnosed?
      • What is the treatment for anxiety?
      • What are the side effects of anxiety medications?
      • What are complications of generalized anxiety disorder?
      • Is it possible to prevent anxiety?
      • What is the prognosis of generalized anxiety disorder?
      • Are there support groups for those with generalized anxiety disorder?
      • Where can people find additional information on generalized anxiety disorder?
    • Arthritis Arthritis is inflammation of one or more joints. When joints are inflamed they can develop stiffness, warmth, swelling, redness...learn more »
      In This Article
      Arthritis Article
      • Arthritis facts
      • What is arthritis? What causes arthritis?
      • What are risk factors for arthritis?
      • What are arthritis symptoms and signs?
      • Who is affected by arthritis?
      • How is arthritis diagnosed, and why is a diagnosis important?
      • What is the treatment for arthritis?
      • Is there a special diet for arthritis?
      • What are the prognosis (outlook) for arthritis, and what are arthritis complications?
      • Can arthritis be prevented?
      • What is a rheumatologist?
      • What is the Arthritis Foundation?
    • Brief Psychotic Disorder Brief psychotic disorder is a short-term mental illness that features psychotic symptoms. There are three forms of brief...learn more »
      In This Article
      Brief Psychotic Disorder Article
      • What are the symptoms of brief psychotic disorder?
      • What causes brief psychotic disorder?
      • How common is brief psychotic disorder?
      • How is brief psychotic disorder diagnosed?
      • How is brief psychotic disorder treated?
      • What is the prognosis for people with brief psychotic disorder?
      • Can brief psychotic disorder be prevented?
    • Cancer Cancer is a disease caused by an abnormal growth of cells, also called malignancy. It is a group of 100 different diseases, and...learn more »
      In This Article
      Cancer Article
      • Cancer facts
      • What is cancer?
      • What causes cancer?
      • What are cancer symptoms and signs?
      • What are the different types of cancer?
      • How is cancer diagnosed?
      • How is cancer staging determined?
      • What is the treatment for cancer?
      • What is the prognosis for cancer?
      • Can cancer be prevented?
      • Where can people find more information about cancer?
    • Cancer Pain Cancer pain results from the tumor pressing on nerves or invading bones or organs. Cancer treatments like chemotherapy,...learn more »
      In This Article
      Cancer Pain Article
      • Introduction
      • What causes cancer pain?
      • What are the symptoms of cancer pain?
      • What medicines are used to treat cancer pain?
      • How else can cancer pain be treated?
    • Cluster Headaches The term cluster headache is a type of headache that recurs over a period of time. There are episodes that last one to three...learn more »
      In This Article
      Cluster Headaches Article
      • What are cluster headaches?
      • Who gets cluster headaches?
      • What are the symptoms and signs of cluster headaches?
      • What causes cluster headaches?
      • What triggers cluster headaches?
      • How are cluster headaches diagnosed?
      • What is the treatment for cluster headaches?
      • Can cluster headaches be prevented?
      • What is the prognosis for cluster headaches?
    • Cocaine and Crack Abuse Cocaine is an addictive stimulant that is smoked, snorted, and injected. Crack is cocaine that comes in a rock crystal that is...learn more »
      In This Article
      Cocaine and Crack Abuse Article
      • Cocaine and crack abuse facts
      • What is cocaine? What is crack?
      • How is cocaine abused?
      • What are cocaine's effects on the body and the mind?
      • What causes and prevents cocaine abuse and addiction?
      • What are symptoms and signs of cocaine abuse and addiction?
      • How is cocaine addiction diagnosed?
      • What is the treatment for cocaine and crack addiction?
      • What are symptoms and signs of cocaine withdrawal?
      • What are the long-term effects and the prognosis for cocaine and crack addiction?
      • Where can people find more information about cocaine and crack abuse?
    • Concussion Concussion is a short-lived loss of brain function that is due to head trauma. There are two types of concussion, simple and...learn more »
      In This Article
      Concussion Article
      • What is concussion and what causes concussion?
      • What are the types of concussion?
      • What are the signs and symptoms of concussion?
      • How is concussion diagnosed?
      • What is the treatment for concussion?
      • How can concussion be prevented?
      • What is the future of concussion?
    • COPD (Chronic Obstructive Pulmonary Disease) COPD or chronic obstructive pulmonary disease is a lung condition caused by smoking tobacco, exposure to secondhand smoke, and/or...learn more »
      In This Article
      COPD (Chronic Obstructive Pulmonary Disease) Article
      • What is chronic obstructive pulmonary disease (COPD)?
      • What are the risk factors for COPD?
      • What other diseases or conditions contribute to COPD?
      • What causes COPD?
      • What are the signs and symptoms of COPD?
      • When should I call my doctor about COPD?
      • How is COPD diagnosed?
      • What is the treatment for COPD?
      • Home remedies for COPD?
      • Medications for COPD
      • Surgery to COPD
      • Can COPD be prevented?
      • What is the prognosis and life expectancy for a person with COPD?
    • Depression Depression is an illness that involves the body, mood, and thoughts and affects the way a person eats and sleeps, the way one...learn more »
      In This Article
      Depression Article
      • Depression facts
      • What is a depressive disorder?
      • What are myths about depression?
      • What are the types of depression, and what are depression symptoms and signs?
      • Depression symptoms and signs in men
      • Depression symptoms and signs in women
      • Depression symptoms and signs in teenagers
      • Depression symptoms and signs in children
      • What are the causes and risk factors of depression?
      • Postpartum depression
      • How is depression diagnosed?
      • What treatments are available for depression?
      • What is the general approach to treating depression?
      • What about sexual dysfunction related to antidepressants?
      • What about discontinuing antidepressants?
      • What are complications of depression?
      • What is the prognosis for depression?
      • How can depression be prevented?
      • What about self-help and home remedies?
      • How can someone help a person who is depressed?
      • Where can one seek help for depression?
      • What is in the future for depression?
      • Where can people find more information about depression?
    • Depression in Children Childhood depression can interfere with social activities, interests, schoolwork and family life. Symptoms and signs include...learn more »
      In This Article
      Depression in Children Article
      • Depression in children facts
      • What is childhood depression?
      • What are the types of depression in children?
      • What are causes and risk factors for depression in children?
      • What are the symptoms and warning signs of depression in children?
      • How is depression in children diagnosed?
      • What should parents do if they suspect that their child is depressed?
      • What is the treatment for depression in children?
      • What are complications of depression in children?
      • What is the prognosis of depression in children?
      • Can depression in children be prevented?
      • Where can families get support for a child with depression?
    • Depression in the Elderly Depression in the elderly is very common. That doesn't mean, though, it's normal. Treatment may involve antidepressants,...learn more »
      In This Article
      Depression in the Elderly Article
      • How does depression in the elderly differ from depression in younger adults?
      • How is insomnia related to depression in the elderly?
      • What are risk factors for depression in the elderly?
      • What types of treatment are available for depression in the elderly?
      • How do antidepressants relieve depression in the elderly?
      • Can psychotherapy help relieve depression in the elderly?
      • Who may benefit from electroconvulsive therapy (ECT)?
      • What other problems affect treatment of depression in the elderly?
    • Dysthymia Dysthymia is a less severe form of chronic depression. Symptoms and signs include insomnia, suicidal thoughts, guilt, empty...learn more »
      In This Article
      Dysthymia Article
      • Dysthymia facts
      • What is dysthymia?
      • What are causes and risk factors for dysthymia?
      • What are symptoms and signs of dysthymia?
      • How do health-care professionals diagnose dysthymia?
      • What is the treatment for dysthymia?
      • What is the prognosis of dysthymia?
      • Is it possible to prevent dysthymia?
      • Are there support groups for people with dysthymia?
    • Gastroesophageal Reflux Disease (GERD) GERD (gastroesophageal reflux disease) is a condition in which the acidified liquid contents of the stomach backs up into the...learn more »
      In This Article
      Gastroesophageal Reflux Disease (GERD) Article
      • GERD facts
      • What is GERD (acid reflux)?
      • What causes GERD?
      • What are the symptoms of uncomplicated GERD?
      • What are the complications of GERD?
      • How is GERD diagnosed and evaluated?
      • Symptoms and procedures to diagnose GERD
      • GERD tests
      • How is GERD treated?
      • Lifestyle changes and GERD diet
      • GERD medications
      • GERD surgery
      • What is a reasonable approach to the management of GERD?
      • What are the unresolved issues in GERD?
    • 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 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?
      • What causes tension headaches?
      • What are the 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?
    • Heart Attack Heart attack happens when a blood clot completely obstructs a coronary artery supplying blood to the heart muscle. A heart...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?
    • Hyperthyroidism Hyperthyroidism is an excess of thyroid hormone resulting from an overactive thyroid gland. Symptoms can include increased heart...learn more »
      In This Article
      Hyperthyroidism Article
      • Hyperthyroidism facts
      • What is hyperthyroidism?
      • What are the thyroid hormones?
      • Thyroid hormone regulation - the chain of command
      • What causes hyperthyroidism?
      • What are the symptoms of hyperthyroidism?
      • How is hyperthyroidism diagnosed?
      • How is hyperthyroidism treated?
      • What's best for you?
    • 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?
      • What is a time zone?
      • Why does jet lag occur?
      • How does the body keep time?
      • What is the role of melatonin in jet lag?
      • Does the direction of travel matter?
      • Do the symptoms of jet lag vary in intensity?
      • How long does jet lag last?
      • What are the best ways to cope with jet lag?
      • Should I take melatonin?
    • Marijuana Get the latest marijuana statistics and information. Learn its negative effects and how this illegal drug, also known as pot,...learn more »
      In This Article
      Marijuana Article
      • Marijuana facts
      • What is marijuana, and how is it abused?
      • What is medical marijuana? How is medical marijuana prescribed?
      • What are other names for marijuana?
      • What is the history and different types of marijuana?
      • Is marijuana addictive?
      • What are the psychological and social effects of abusing marijuana?
      • What are the physical effects of abusing marijuana?
      • What are the treatments for marijuana abuse and addiction?
      • Can marijuana abuse and addiction be prevented?
      • What is the prognosis of marijuana abuse and addiction?
      • Where can people find more information about marijuana abuse and addiction?
    • Menopause Menopause is the time in a woman's life when menstrual periods permanently stop, also called the "change of life." Menopause...learn more »
      In This Article
      Menopause Article
      • Menopause facts
      • What is menopause?
      • At what age does a woman typically reach menopause?
      • What conditions can affect the timing of menopause?
      • What are the symptoms of menopause?
      • What are the complications and effects of menopause on chronic medical conditions?
      • Are hormone levels or other blood tests helpful in detecting menopause?
      • What are the treatment options for the symptoms of menopause?
      • Hormone therapy for menopause
      • Other medical therapies for menopause
      • Alternative therapies for menopause
      • Non-hormone therapies for menopause
      • Lifestyle factors in managing menopause symptoms
    • Mental Health Mental health is an optimal way of thinking, relating to others, and feeling. All of the diagnosable mental disorders fall under...learn more »
      In This Article
      Mental Health Article
      • Mental health and mental illness facts
      • What is mental health?
      • What is mental illness?
      • What are common types of mental illness?
      • What are the causes and risk factors for mental illness?
      • What are symptoms and signs of mental illness?
      • How is mental illness diagnosed?
      • What is the treatment for a mental health problem?
      • Can mental health disorders be prevented?
      • What is the prognosis for mental health problems?
      • Where can people get support for mental health disorders?
      • Where can people get more information about mental illnesses?
    • Mental Illness in Children About 5 million children and adolescents in the U.S. suffer from a serious mental illness such as eating disorders, anxiety...learn more »
      In This Article
      Mental Illness in Children Article
      • Mental illness in children facts
      • What are the most common mental illnesses in children?
      • What are causes and risk factors for mental illness in children?
      • What are symptoms and signs of mental illness in children?
      • How is mental illness in children diagnosed?
      • What is the treatment for mental illness in children?
      • What is the prognosis of mental illness in children?
      • Can mental illness in children be prevented?
      • What research is being done on mental illness in children?
      • Where can parents find information or support groups for mental illness in children?
    • 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
      • What is a migraine?
      • What are the risk factors for migraine?
      • What causes migraines?
      • What triggers migraines?
      • What are the signs and symptoms of migraines?
      • How are migraines diagnosed?
      • What is the treatment for migraines?
      • What self-care treatment measures 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?
    • Panic Attacks Panic attacks are sudden feelings of terror that strike without warning. These episodes can occur at any time, even during sleep....learn more »
      In This Article
      Panic Attacks Article
      • Panic attack facts
      • What are panic attacks?
      • What are panic attack symptoms and signs in adults, teenagers, and children?
      • Are panic attacks serious?
      • What are causes and risk factors for panic attacks?
      • How is panic disorder diagnosed?
      • What is the treatment for panic attacks? What medications treat panic attacks?
      • What are complications of untreated panic attacks?
      • What is the prognosis for panic disorder?
      • How are panic attacks prevented?
    • Parkinson's Disease Parkinson's disease is a slowly progressive neurologic disease characterized by a fixed inexpressive face, a tremor at rest,...learn more »
      In This Article
      Parkinson's Disease Article
      • Parkinson's disease facts
      • What is Parkinson's disease?
      • What causes Parkinson's disease?
      • What genes are linked to Parkinson's disease?
      • Who is at risk for Parkinson's disease?
      • What are the symptoms of Parkinson's disease?
      • What other conditions resemble Parkinson's disease?
      • How is Parkinson's disease diagnosed?
      • What is the treatment for Parkinson's disease?
      • How can people learn to cope with Parkinson's disease?
      • Can Parkinson's disease be prevented?
      • What is the prognosis for Parkinson's disease?
    • 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?
    • Premenstrual Syndrome (PMS) Premenstrual syndrome (PMS) is a combination of physical and emotional disturbances that occur after a woman ovulates and ends...learn more »
      In This Article
      Premenstrual Syndrome (PMS) Article
      • Premenstrual syndrome (PMS) facts
      • What is premenstrual syndrome?
      • How common is PMS?
      • When was PMS discovered?
      • What causes PMS?
      • What are the symptoms of PMS?
      • How is the diagnosis of PMS made?
      • What conditions are like PMS?
      • How is PMS distinguished from other conditions?
      • What treatments are available for PMS?
      • What medications are used to treat PMS?
      • Are there herbal or natural remedies for PMS?
      • Can exercise help relieve some of the symptoms of PMS?
      • Is there a "cure" for PMS?
    • Rabies Rabies is a viral disease that is transmitted via the bite of an infected animal. Symptoms include fever, headaches, and...learn more »
      In This Article
      Rabies Article
      • Rabies facts
      • What is rabies?
      • What causes rabies?
      • What are risk factors for rabies?
      • What are rabies symptoms and signs?
      • How do physicians diagnose rabies?
      • What is the treatment for rabies?
      • What is the prognosis of rabies?
      • Is it possible to prevent rabies? Is there a rabies vaccine?
    • Restless Leg Syndrome Restless leg syndrome (RLS or restless legs syndrome) is a common cause for painful legs that typically eases with motion, and...learn more »
      In This Article
      Restless Leg Syndrome Article
      • Restless leg syndrome facts
      • What is restless leg syndrome (RLS)?
      • What causes restless leg syndrome?
      • What are the symptoms of restless leg syndrome?
      • How is restless leg syndrome diagnosed?
      • Can other conditions mimic restless leg syndrome?
      • What is the treatment for restless leg syndrome?
      • What medications are used to treat restless leg syndrome?
      • Are there any remedies or complimentary/alternative treatments for restless leg syndrome?
    • Sleep A number of vital tasks carried out during sleep help maintain good health and enable people to function at their best. Sleep...learn more »
      In This Article
      Sleep Article
      • What is sleep?
      • What are the stages of sleep?
      • How much sleep does a person need?
      • Does the amount of sleep we need change as we age?
      • What are signs and symptoms of sleep deprivation?
      • What are and what causes sleep disorders?
      • How are sleep problems diagnosed?
      • How are sleep problems treated?
      • Sleep hygiene
      • Other therapies
      • Sleep aids (prescription and OTC)
      • Are sleep problems and disease related?
      • How can I get a good night's sleep?
    • 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?
    • Sleep Related Breathing Disorders Sleep-related breathing disorders are characterized by disruptions of normal breathing patterns that only occur during sleep....learn more »
      In This Article
      Sleep Related Breathing Disorders Article
      • What are sleep related breathing disorders?
      • Why do we sleep?
      • What are the stages of sleep?
    • Snoring Snoring, like all other sounds, is caused by vibrations that cause particles in the air to form sound waves. While we are asleep,...learn more »
      In This Article
      Snoring Article
      • Snoring facts
      • What is snoring?
      • How common is snoring?
      • What are the causes of snoring?
      • How do medications and alcohol affect snoring?
      • Why is snoring a problem?
      • What is the clinical importance of snoring?
      • What are different levels of snoring?
      • How should someone with snoring be evaluated?
      • How is it determined if snoring is a medical problem?
      • What are some objective tests to measure sleepiness?
      • What are the treatments for snoring?
      • What are some non-surgical treatments for snoring?
      • What are the surgical options for snoring?
      • What is the success of surgery for snoring?
    • 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?
      • 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's in the future for stress?
    • Suicide Suicide is the process of intentionally ending one's own life. Approximately 1 million people worldwide commit suicide each year,...learn more »
      In This Article
      Suicide Article
      • Suicide facts
      • What is suicide?
      • What are the effects of suicide?
      • What are some possible causes of suicide?
      • What are the risk factors and protective factors for suicide?
      • What are the signs and symptoms for suicide?
      • How are suicidal thoughts and behaviors assessed?
      • What is the treatment for suicidal thoughts and behaviors?
      • How can people cope with suicidal thoughts?
      • How can people cope with the suicide of a loved one?
      • Where can people get help?
    • Tension Headache A tension headache is a headache previously thought to be caused by contraction of the muscles in the back of the neck, on the...learn more »
      In This Article
      Tension Headache Article
      • 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?
      • Are home remedies effective for tension headache?
      • Can tension headaches be prevented?
    • 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?
      • Can one person contract the virus from another?
      • Besides mosquitoes, can other insects transmit the West Nile virus?
      • Are there other viruses like the West Nile virus?
      • What are West Nile virus symptoms and signs?
      • When is there an increased risk for infection?
      • Who is at risk for getting West Nile virus?
      • What is the treatment for West Nile virus? Can West Nile virus be prevented with a vaccine?
      • Is a woman's pregnancy at risk if she gets 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 Insomnia
Examples of Medications for Insomnia