Epstein – Barr
Ans.A. Herpes Labialis
Herpes labialis, commonly known as cold sores, is a type of infection by the herpes simplex virus that affects primarily the lip. Symptoms typically include a burning pain followed by small blisters or sores. The first attack may also be accompanied by fever, sore throat, and enlarged lymph nodes.
Relapsing infections are limited to the mucosa of the hard palate or, in older children and adults, the lips. The number of relapses decreases after the age of 35 years.