Infectious mononucleosis is a viral infection caused predominantly by the Epstein-Barr virus, which is part of the herpesvirus family. It is transmitted through bodily fluids, most commonly saliva, which is why it has been nicknamed the "kissing disease." The condition is characterized by symptoms such as extreme fatigue, fever, sore throat, and swollen lymph glands. Although it is usually self-limiting, symptoms can persist for weeks or even months in some cases.
