Acne is the most frequent skin condition seen at Cypress Fairbanks Dermatology. The skin erupts when the follicles in the epidermis become clogged and blocked with naturally produced oil. Blackheads, whiteheads, pimples, and even deeper lumps such as cysts or nodules can occur on the face, neck, chest, back, shoulders, and upper arms. Severe acne can lead to serious and permanent scarring. About 80% of adolescents have some form of acne and about 5% of adults experience acne.