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West Nile Virus Disease

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Definition

West Nile virus is a disease spread by mosquitos. The condition ranges from mild to severe.

Symptoms

Mild disease, generally called West Nile fever, has some or all of the following symptoms:

Abdominal pain
Back pain
Diarrhea
Fever
Headache
Lack of appetite
Muscle aches
Nausea
Sore throat
Vomiting

These symptoms usually last for 3 - 6 days.

With more severe disease, the following symptoms can also occur, and need prompt attention:

Confusion or change in ability to think clearly
Loss of consciousness
Muscle weakness
Stiff neck

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Fever
Fever is the temporary increase in the body's temperature, in response to some disease or illness. A child has a fever when their temperature is at or above one of these levels: 100.4 F (38 C) measured in the bottom (rectally; 99.5 F(37.5 C) measu... More »
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Headache
A headache is pain or discomfort in the head, scalp, or neck. Serious causes of headaches are extremely rare. Most people with headaches can feel much better by making lifestyle changes, learning ways to relax, and occasionally by taking medicatio... More »
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Fatigue
Fatigue is a feeling of weariness, tiredness, or lack of energy. More »
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