Mononucleosis, often called "mono," is an illness caused by the Epstein-Barr virus. When mono occurs during adolescence or adulthood, symptoms are more severe --high fever that can last up to three weeks, swollen lymph glands in the back of the neck, and severe sore throat. Rare but major complications that can develop from mono include rupture of the spleen. Follow the links below to find WebMD's comprehensive coverage about how mononucleosis is contracted, what it looks like, how to treat it, and much more.
What Are the Symptoms of Mononucleosis? When Should I Call the Doctor?
How much do you know about mononucleosis? Get the facts on "mono" from the experts at WebMD.
Epstein-Barr Virus (EBV)
Learn about the symptoms, prevention, and treatment of an infection with Epstein-Barr, the virus that causes mononucleosis.
What Is Mononucleosis? What Causes It?
Mononucleosis is sometimes called “the kissing disease,” but kissing isn’t the only way you can get it. Learn how to spot the signs of mono and get the right treatment.
Mononucleosis Tests and Treatments
Learn more about the tests and treatment options for mononucleosis, aka "mono."