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Viral Meningitis

 

Definition

Meningitis is swelling and inflammation of layers that surround the brain and spine. It can lead to a series of symptoms. Viral meningitis is caused by a virus. It is often less serious than bacterial meningitis.

The Spinal Cord and Meninges

Nucleus factsheet image

Copyright © Nucleus Medical Media, Inc.

 

Causes    TOP

Viral meningitis is caused by a virus. Examples of viruses linked to meningitis include:

Viruses spread from person to person in different ways. Some may be released in air with coughs or sneezes. Others may spread through contact with infected fluids or mosquito bites. Contact with someone who has viral meningitis is not likely to result in meningitis.

 

Risk Factors    TOP

Viral meningitis is more common in children under 5 years old. Factors that may increase the chance of an infection include:

  • Conditions that weaken the immune system, such as HIV
  • Treatments that weaken the immune system
  • Crowded, unsanitary conditions
  • Season—summer and early fall in areas with mild climates
 

Symptoms    TOP

Symptoms of viral meningitis include:

  • Fever
  • Headache
  • Stiff or sore neck
  • Nausea
  • Vomiting
  • Sensitivity to bright lights
  • Sleepiness

Symptoms in newborns and infants include:

  • Inactivity
  • Fever—especially unexplained high fever
  • Irritability
  • Vomiting
  • Feeding poorly or refusing to eat
  • Tautness or bulging of soft spots between skull bones
  • Difficulty awakening
 

Diagnosis    TOP

The doctor will ask about your symptoms and medical history. A physical exam will be done. A sample of fluid around the spine and brain will be taken and tested. It will confirm meningitis. Blood, urine, sputum, and spinal fluid may also be tested. It will help to confirm the infection is caused by a virus instead of bacteria.

Images of the brain, spine, and skull may be taken with:

 

Treatment    TOP

Most viral infections will pass on their own in 7 to 10 days. Treatment will help to ease symptoms. Steps may include:

  • Fluids—may be given by IV if vomiting is severe
  • Nonsteroidal anti-inflammatory drugs (NSAIDs)
    • Note: Aspirin is not recommended for children with a current or recent viral infection. Check with your doctor before giving your child aspirin.
 

Prevention    TOP

Once you have a virus there are no steps to prevent meningitis. To reduce your chance of common viral infections:

  • Wash your hands often. It is very important after using bathroom or changing diapers.
  • Surfaces or objects that are touched often should be cleaned on a regular basis.
  • Be sure all of your vaccinations are up-to-date.
  • Take steps to avoid mosquito bites. Be aware of outbreaks of mosquito-related illnesses in your area.
  • Use proper care when cleaning rat or mouse feces or nesting.
RESOURCES:

Centers for Disease Control and Prevention
http://www.cdc.gov

Meningitis Foundation of America
https://mfa.nationbuilder.com

CANADIAN RESOURCES:

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

Public Health Agency of Canada
http://www.phac-aspc.gc.ca

REFERENCES:

Enteroviral meningitis. EBSCO DynaMed website. Available at: https://www.dynamed.com/condition/enteroviral-meningitis . Updated July 15, 2019. Accessed September 13, 2019.

Viral meningitis. Centers for Disease Control and Prevention website. Available at:
...(Click grey area to select URL)
Updated August 6, 2019. Accessed September 13, 2019.



Last reviewed September 2019 by EBSCO Medical Review Board David Horn, MD
Last Updated: 9/13/2019

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