Mononucleosis Symptoms

Common early mononucleosis symptoms are extreme fatigue, fever, and a sore throat. The term mononucleosis is often abbreviated to ‘mono’ by the general public.

Mononucleosis is caused by a severe infection with the Epstein-Barr virus. As many as 95% of adults will have a mild Epstein-Barr virus infection at one time in their lives.

A severe infection may occur in teenagers and young adults. This infectious mononucleosis can be transmitted person-to-person from close contact.

Mono symptoms vary widely in severity. Different strains of the virus may be responsible for this variation. Mono infection symptoms are typically detected 30-50 days following exposure and infection.

Mononucleosis infection symptoms:

  • extreme fatigue
  • fever
  • sore throat (pus in throat may form)
  • swelling of lymph nodes (most commonly in the neck)
  • general feeling of illness
  • jaundice of the eyes
  • skin rash
  • seizures
  • behaviour abnormalities

Diagnosis is typically through blood testing.

Treatment is typically bed rest and with pain relievers of the NSAID family. Symptom relief is the key focus.