###Human: Is having acne under chin and above neck related to HIV? ###Assistant: Hi. The erythematous papular eruptions which you have on your facial area seems to be acne or folliculitis (attachment removed to protect patient identity). This is a superficial skin infection, commonly bacterial and is extremely common irrespective of HIV status. It has no association with starting or stopping masturbation. For your unprotected sexual exposure get your HIV rapid combo test, if negative you will require a repeat testing at three months and preferably at six months of exposure also. I also advise you having safe sex using consistently and correctively condoms in the future.