A 57-year-old female patient complains of “strange pimples” over her buttocks re

1 -- Acne conglobata is a chronic type of acne of unknown cause that begins in middle adulthood. It causes serious skin lesions consisting of comedones, papules, pustules, nodules, cysts, and scars. This acne occurs primarily on the back, buttocks, and chest. Contact dermatitis is manifested as a raised, reddened area that appears as a rash and can occur anywhere on the body, affecting individuals of all ages. Acne vulgaris is found in preteens, teens, and young adults, and occurs on the face and shoulders. Acne rosacea appears as a red, blotchy area and is limited to the face.