In-depth

Complications

Encephalitis

Encephalitis is inflammation of the brain usually caused by a viral infection. Severe cases can cause brain damage, even death.

Symptoms

Coma

Fatigue

Headache

Most headaches aren't caused by a serious illness, but some could be a sign of a life-threatening condition.

Symptom Checker

Foot pain? Headache? Sore throat? Skin rash? Use the Symptom Checker to find out what's causing your symptom.

Tests and diagnosis

EEG (electroencephalogram)

Lumbar puncture (spinal tap)

MRI

MRI uses a magnetic field and radio waves to create detailed images of the organs and tissues within your body.

Dec. 16, 2015
References
  1. West Nile virus. Centers for Disease Control and Prevention. http://www.cdc.gov/westnile/index.html. Accessed Oct. 4, 2015.
  2. Petersen LR. Clinical manifestations and diagnosis of West Nile virus infection. http://www.uptodate.com/home. Accessed Oct. 4, 2015.
  3. Petersen LR. Treatment and prevention of West Nile virus infection. Accessed Oct. 4, 2015.