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Infectious mononucleosis (commonly called mono) is a viral disease that affects the throat, lungs, liver and lymphatic system. It usually affects children and young adults from 12 to 40 years old. Mono is caused by the Epstein-Barr virus and is passed from person to person by close contact, such as kissing and sharing eating utensils or food.


  • Fever
  • Sore throat
  • Appetite loss
  • Fatigue
  • Headaches
  • Muscle aches
  • Swollen lymph glands, usually in the neck, underarms, or groin
  • Enlarged spleen
  • Enlarged liver
  • Jaundice with yellow skin and eyes

Not all symptoms are present in every case.

Diagnosis and Treatment

Your medical provider will examine you and ask about symptoms. Blood tests may be required.

No specific cure or treatment is available. Antibiotics do not cure viral infections, including mono.

Extra rest and healthy diet are important.

You do not need to worry about transmitting mono through casual contact with other people. You may want to avoid close or intimate contact to prevent spreading the virus.

To ease sore throat pain, gargle frequently with warm salt water or double-strength tea.

Don't strain hard for bowel movements, as this may injure an enlarged spleen.

For minor pain, nonprescription drugs such as acetaminophen are recommended.

Seek Medical Care

If your fever is over 102 degrees.

If constipation occurs, as this may cause straining.

If you have sever pain in the upper left abdomen. This may indicate rupture of the spleen, which is a medical emergency.

If your skin turns yellow.

If you have difficulty swallowing or breathing from severe sore throat.

Please refer to the CDC Website For More Information