When to Seek Medical Care

Call a health-care provider for an appointment if any of the signs or symptoms of mononucleosis appear. Diagnosis of the illness by a health-care provider is important to make sure that it is not another medical condition that may require more extensive medical evaluation and treatment.

The following signs and symptoms require urgent evaluation:

• difficulty breathing (may suggest airway obstruction from enlarged lymph nodes),
  
  
• difficulty swallowing (severe sore throat),
  
  
• abdominal pain (may signal that the spleen has ruptured),
  
  
• bleeding from the gums or easy bruising,
  
  
• seizures,
  
  
• severe headaches,
  
  
• chest pain,
  
  
• inability to drink fluids (may lead to dehydration),
  
  
• severe weakness in the arms or legs, and
  
  
• yellow discoloration of the skin.

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Mononucleosis (mono) - Symptoms Experienced

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