Prodrome (itching, burning, tingling) lasts approximately 12 to 36 hours, followed by eruption of clustered vesicles along the vermilion border that subsequently rupture, ulcerate, and crust
Prodrome (itching, burning, tingling) lasts approximately 12 to 36 hours, followed by eruption of clustered vesicles along the vermilion border that subsequently rupture, ulcerate, and crust