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Viral Meningitis

 

Definition

The brain and spinal cord are surrounded by layers of tissue. These layers are called the meninges. When these layers becomes swollen and irritated, it is called meningitis. The swelling in these layers can put pressure on the brain and spinal cord. The most common forms of meningitis include:

The Spinal Cord and Meninges

Nucleus factsheet image

Copyright © Nucleus Medical Media, Inc.

 

Causes    TOP

Viral meningitis may be caused by several viruses. Examples include:

Viruses can be spread in numerous ways including:

  • Contact with fluids from the cough or sneeze of an infected person
  • Contact with feces from an infected person
  • Close personal contact with someone who is sick
  • Through insect bites
 

Risk Factors    TOP

Viral meningitis is more common in children under 5 years old. Other factors that may increase the chance of viral meningitis include:

  • Conditions that weaken the immune system, such as HIV
  • Treatments that suppress the immune system
  • Crowded, unsanitary conditions
  • Season—summer and early fall
 

Symptoms    TOP

Symptoms of viral meningitis include:

  • High fever
  • Headache
  • Stiff, sore neck
  • Nausea
  • Vomiting
  • Sensitivity to bright lights
  • Sleepiness

Symptoms in newborns and infants include:

  • Inactivity
  • High 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. The doctor will focus on the nervous system.

To help rule out other causes of the inflammation, your doctor may need images of the brain, spine, and skull. Imaging tests may include:

Viral meningitis has symptoms similar to bacterial meningitis. To make sure you do not have bacterial meningitis, the following tests of your bodily fluids may be done:

  • Blood tests
  • Urine tests
  • Sputum tests
  • Lumbar puncture —to evaluate cerebralspinal fluid that surrounds the spinal cord and brain
  • Tests of pus from skin infections
 

Treatment    TOP

Treatment includes:

  • Rest and fluids
  • 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.
  • Antibiotics may be given for 2-3 days while the doctor waits for test results—antibiotics are not effective in treating viral infections
  • IV antiviral drugs—for severe infections—few viruses can be treated this way
 

Prevention    TOP

To reduce your chance of a viral infection:

  • Wash your hands often, especially:
    • If you are in close contact with an infected person
    • After you change the diaper of an infected infant
  • Regularly wash objects and surfaces touched by children. Use a diluted bleach solution.
  • Ask your doctor about appropriate vaccinations, especially if you've never had measles, mumps, rubella, and chickenpox.
  • To prevent infections spread by mosquito bites:
    • Follow local public health recommendations for reducing mosquitoes near your home.
    • Take steps to avoid being bitten by mosquitoes. Use insect repellent and appropriate clothing when outdoors.
    • Avoid areas or being outside when mosquitoes are prevalent.
  • If you are contemplating a pregnancy:
    • Be sure you are protected from common diseases like chickenpox. Ask your doctor about recommended vaccinations.
    • Avoid all contact with rodents during pregnancy.
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 Plus website. Available at: http://www.dynamed.com/topics/dmp~AN~T115792/Enteroviral-meningitis . Updated September 8, 2015. Accessed September 27, 2015.

Viral meningitis. Centers for Disease Control and Prevention website. Available at:
...(Click grey area to select URL)
Updated April 1, 2014. Accessed August 27, 2014.



Last reviewed May 2018 by David Horn, MD
Last Updated: 8/27/2014

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