Hi The description that you have provided points in favor of a herpes skin infection. There can usually be three to five recurrences in a year. Any kind of fever ,stress , illness or even direct sunlight can act as triggers for the recurrence of the episodes. You should take a proper course of oral antivirals whenever you tend to develop it again. You should keep the affected area clean and dry . See a nearby dermatologist for confirmation of the diagnosis and thereby further management . Dr Geetika Paul