A recurrent viral infection in the mouth is known as what?

The term for a recurrent viral infection in the mouth is herpes simplex. This condition is primarily caused by the herpes simplex virus type 1 (HSV-1), which leads to the formation of cold sores or fever blisters around the lips and oral cavity. While cold sores are a common manifestation of this viral infection, the overarching term that encompasses the cause of these recurrent outbreaks is herpes simplex.

Other options represent different conditions unrelated to the virus type that causes recurrent oral infections. Canker sores, for instance, are non-contagious ulcers in the mouth that have no known viral origin. Oral thrush is a fungal infection caused by the overgrowth of Candida yeast in the mouth, and it is not related to viral infections.