Munson Health
 
Encephalitis

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by Carson-DeWitt R
 

Causes

The most common viruses that cause encephalitis include:
Not all encephalitis is caused by a virus. Some may be due to an overreaction of the immune system.
 

Diagnosis

The doctor will ask about your symptoms and medical history. A physical exam will be done.
Tests may include:
  • Blood tests
  • Lumbar puncture—to evaluate cerebrospinal fluid that surrounds the spinal cord and brain
  • CT scan and/or MRI scan—to evaluate internal structures of the head
  • Electroencephalogram (EEG)— to look for abnormal electrical activity in the brain
  • Brain biopsy—removal of a small sample of brain tissue to test for signs of infection
 

RESOURCES

Encephalitis Information Resource
http://www.encephalitis.info

National Institute of Neurological Disorders and Stroke
http://www.ninds.nih.gov

 

CANADIAN RESOURCES

Canadian Neurological Sciences Federation
http://www.cnsfederation.org

Health Canada
http://www.hc-sc.gc.ca

 

References


Herpes simplex encephalitis. EBSCO DynaMed website. Available at: http://www.ebscohost.com. Updated February 21, 2013. Accessed May 30, 2014.


California encephalitis. EBSCO DynaMed website. Available at: http://www.ebscohost.com. Updated February 21, 2013. Accessed May 30, 2014.


Eastern equine encephalitis. EBSCO DynaMed website. Available at: http://www.ebscohost.com. Updated September 19, 2013. Accessed May 30, 2014.


NINDS meningitis and encephalitis information page. National Institute of Neurologic Disorders and Stroke website. Available at: http://www.ninds.nih.gov/disorders/encephalitis%5Fmeningitis/encephalitis%5Fmeningitis.htm. Updated April 16, 2014. Accessed May 1, 2014.


West Nile virus infection. EBSCO DynaMed website. Available at: http://www.ebscohost.com. Updated August 9, 2013. Accessed May 30, 2014.


10/1/2013 DynaMed Systematic Literature Surveillance http://www.ebscohost.com. Reimer LJ, Thomsen EK, Tisch DJ, et al. Insecticidal bed nets and filariasis transmission in Papua New Guinea. N Eng J Med. 2013 Aug 22; 369(8):745-53.

 

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