05/31/2026
Mononucleosis, often called mono, is a common viral illness in teens caused by the Epstein-Barr virus. It is sometimes referred to as the “kissing disease” because it spreads through saliva.
Typical symptoms include significant fatigue, sore throat, swollen lymph nodes, fever, and sometimes an enlarged spleen.
Many teens feel very tired for several weeks, even after other symptoms begin to improve.
Treatment is mainly supportive, focusing on rest, hydration, and symptom relief. Because mono can affect the spleen, it is important to avoid contact sports or heavy activity until cleared by a healthcare provider.
If your teen has symptoms of mono or prolonged fatigue, contact Dover Pediatrics to discuss evaluation and guidance on safe return to activities.
603-742-4048
doverpediatrics.org