Influenza Index

Featured: Flu (Influenza) Main Article

Influenza (flu) is a respiratory illness caused by a virus. Flu symptoms include fever, cough, sore throat, runny nose, headache, fatigue, and muscle aches. The flu may be prevented with an annual influenza vaccination.

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    Related Diseases & Conditions

    • Diarrhea Diarrhea is a change is the frequency and looseness of bowel movements. Symptoms associated with diarrhea are cramping, abdominal...learn more »
      In This Article
      Diarrhea Article
      • Diarrhea facts
      • What is diarrhea?
      • What is the definition of diarrhea?
      • What symptoms are associated with diarrhea?
      • What are common causes of acute diarrhea?
      • Traveler's diarrhea
      • Viral gastroenteritis
      • Bacterial enterocolitis
      • Food poisoning
      • Parasites
      • Drugs
      • What are common causes of chronic diarrhea?
      • What kind of a doctor treats diarrhea?
      • When should the doctor be called for diarrhea?
      • How is the cause of diarrhea diagnosed?
      • What home remedies help the symptoms of diarrhea?
      • What medications are used to treat diarrhea?
      • When should antibiotics be used for diarrhea?
      • What are the complications of diarrhea?
      • How can dehydration be prevented and treated?
      • What about treatment of diarrhea in infants and young children?
      • What about treating diarrhea in older children and adults?
    • Upper Respiratory Tract Infection An upper respiratory infection is a contagious infection of the structures of the upper respiratory tract, which includes the...learn more »
    • Bronchitis (Acute) Bronchitis is inflammation of the airways in the lung. Acute bronchitis is is short in duration (10 to 20 days) in comparison...learn more »
    • Fatigue Fatigue can be described in various ways. Sometimes fatigue is described as feeling a lack of energy and motivation (both mental...learn more »
      In This Article
      Fatigue Article
      • Fatigue Facts
      • Fatigue introduction
      • What causes fatigue?
      • What are the signs and symptoms of fatigue?
      • How is the cause of fatigue diagnosed?
      • What is the treatment for fatigue?
      • Can fatigue be prevented?
    • Eustachian Tube Problems (Problems Clearing Your Ears) The Eustachian tube is a membrane lined tube that connects the middle ear space to the back of the nose. Problems include partial...learn more »
      In This Article
      Eustachian Tube Problems (Problems Clearing Your Ears) Article
      • What is the Eustachian tube?
      • What are the functions of the Eustachian tube?
      • What can cause Eustachian tube blockage?
      • How do changes in altitude or air travel affect Eustachian tube problems?
      • How is Eustachian tube blockage treated?
      • Eustachian Tube Problems At A Glance
    • Fever Although a fever technically is any body temperature above the normal of 98.6 F (37 C), in practice, a person is usually not...learn more »
      In This Article
      Fever Article
      • Fever facts
      • What is a fever?
      • What causes a fever?
      • What are the signs and symptoms of a fever?
      • How is a fever diagnosed?
      • How should someone take a temperature for fever?
      • What is the treatment for a fever?
      • When should someone seek medical care for a fever?
      • What kind of doctors treat a fever?
      • What are complications of a fever?
      • What is the prognosis for a fever?
      • Is it possible to prevent a fever?
      • Where can people find more information about fevers?

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Terms related to Influenza:

  • Flu