adult mononucleosis symptoms
Signs and symptoms of mononucleosis may include: 1  Fatigue. 2  Sore throat, perhaps a strep throat that doesn't get better with antibiotic use. 3  Fever. Swollen lymph nodes in your neck and armpits.  Swollen 1  tonsils. Headache.  Skin 1  rash. Soft, swollen  spleen.