Health information · ENT
Infectious Mononucleosis (EBV): Symptoms and Recovery
Persistent sore throat and marked fatigue are not always an ordinary cold.
Infectious mononucleosis, often called mono, is most commonly associated with Epstein–Barr virus (EBV). It can cause fever, sore throat, swollen lymph nodes and substantial fatigue, particularly in teenagers and young adults. Many people who acquire EBV, however, have few or no noticeable symptoms.
How does EBV spread?
EBV usually spreads through saliva. Kissing is one route, but sharing drinks, cups or personal items that come into contact with saliva can also matter. Exposure to the virus does not always produce symptomatic mononucleosis.
Most adults have been exposed to EBV at some point. Because some antibodies remain detectable after a past infection, a positive result must be interpreted in context rather than assumed to mean a new infection.
Common signs and symptoms
Symptoms may include pronounced fatigue, fever, sore throat, swollen lymph nodes in the neck and enlarged tonsils. The liver or spleen may also become enlarged in some patients. Not everyone develops all the symptoms, and onset can be gradual.
Other viral or bacterial infections can cause similar throat symptoms. An examination and, where appropriate, testing help identify the likely cause.
Diagnosis and supportive care
Assessment may include the throat, lymph nodes, general health and examination for possible complications. A clinician may request blood tests, including EBV-specific tests, in selected cases. Their interpretation depends on the stage of infection.
Treatment is usually supportive, focusing on rest, fluids and symptom relief. Antibiotics do not treat EBV and should not be taken unless a separate bacterial infection warrants them. Certain antibiotics, including amoxicillin, can be associated with a rash in people with mono.
Recovery, sports and warning signs
Many people improve over a few weeks, though fatigue can last longer. Because the spleen may enlarge, returning to contact sports or activities involving abdominal impact should be planned with a healthcare professional.
Breathing difficulties, inability to swallow saliva, severe abdominal pain or faintness require urgent medical assessment. Recovery and follow-up needs vary between individuals.
Frequently asked questions
Can EBV spread without kissing?
Yes. Transmission is commonly linked to saliva, including shared drinks and other items.
Do antibiotics treat mono?
No. They do not treat EBV; a separate bacterial illness would require an individual clinical decision.
When can I return to contact sports?
The potential for spleen enlargement means return should follow appropriate clinical assessment.
Assessment before assumptions.
Information here does not replace an examination or individual medical advice.