Which of the following is not a classic symptom of mono?

The presence of fever, sore throat, and swollen lymph nodes are all classic symptoms of infectious mononucleosis, commonly caused by the Epstein-Barr virus. These three symptoms often present together and are mainly due to the body's immune response to the viral infection.

Fever is a common indicator of infection, sore throat is frequently experienced due to inflammation of the throat, and swollen lymph nodes reflect the activation of the lymphatic system in response to the virus.

On the other hand, vomiting is not typically associated with mononucleosis. While gastrointestinal symptoms can occur in some cases, they are not considered a hallmark symptom of the condition. Instead, vomiting would suggest a different underlying issue or infection. Understanding this distinction is important for recognizing and diagnosing infectious mononucleosis effectively.