What is the first treatment tried for glandular fever?

Glandular fever, also called infectious mononucleosis, is commonly caused by a virus, so antibiotics do not treat the underlying infection. A clinician may examine your throat and neck and arrange a [Blood Test](/treatments/diagnostics-and-screening/blood-test/) if the symptoms or examination need clarification. Tiredness can continue after the sore throat improves.

Rest, drink regularly, and use a pain or fever medicine only if it is suitable for you and taken as directed. Choose soft foods if swallowing hurts. Avoid strenuous exercise and contact sports while unwell, because the spleen can become enlarged. A [GP Consultation](/treatments/consultations-and-assessment/gp-consultation/) can guide a gradual return to normal activity.

Get urgent help for severe difficulty breathing or swallowing, inability to swallow saliva, sudden severe abdominal pain, fainting, or marked weakness. Seek medical advice for dehydration, worsening symptoms, yellowing of the skin or eyes, or a sore throat that is not improving.

Ask whether a blood test is useful, which pain relief is appropriate, how long to avoid strenuous activity, and what signs suggest a complication. Ask when you can safely return to work, school, exercise, and close-contact activities.