Case 3: Herpes simplex type 1
Herpes simplex, A, was suspected, and antiviral therapy was started. A culture was positive for herpes simplex virus, type 1. Herpes simplex can mimic impetigo, but the viral infection recurs at the same site. Unlike the lesion seen here, fixed drug eruptions are usually not vesicular. Insect bites or contact dermatitis can resemble herpes simplex, although it would be unusual for them to recur in the same location.