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Clinical Reference Systems: Pediatric Advisor 10.0
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Infectious Mononucleosis - Brief Version

What is mononucleosis?

Mononucleosis (mono) is a sickness caused by the Epstein- Barr virus. The virus is spread through saliva from coughing, sneezing, and kissing.

Your child will probably have:

  • a very bad sore throat with positive blood test for mono
  • swollen lymph nodes in the neck, armpits, and groin
  • fever for 7 to 14 days
  • enlarged spleen (in 50% of children).

Most children have symptoms for a week. Those with very bad symptoms usually feel completely well in 2 to 4 weeks.

How can I take care of my child?

  • Give fever and pain medicines. No specific medicine will cure mono. Give acetaminophen or ibuprofen for the pain of swollen lymph nodes and fever.
  • Treat the sore throat. Give soft foods. Children over age 1 can sip warm chicken broth. Children over age 4 can suck on hard candy.
  • Let your child rest. Your child can select how much rest he or she needs.
  • Be careful not to injure your child's enlarged spleen. All children with mono should avoid contact sports for at least 4 weeks. Your child should avoid heavy lifting and getting constipated.
  • Don't spread mono. Use separate drinking glasses and utensils and avoid kissing.

Call your child's doctor right away if:

  • Breathing becomes difficult or noisy.
  • Abdominal pain occurs (especially high on your child's left side).
  • Signs of dehydration occur.
  • Your child starts acting very sick.

Call your child's doctor in 24 hours if:

  • Your child isn't drinking enough fluids.
  • Sinus or ear pain occurs.
  • Your child isn't back to school by 2 weeks.
  • Any symptoms remain after 4 weeks.
  • You have other questions or concerns.

Written by B.D. Schmitt, M.D., author of "Your Child's Health," Bantam Books.
Copyright 1999 Clinical Reference Systems