acne - an inflammatory disease involving the sebaceous glands of the skin; characterized by papules or pustules or comedones

symptom - (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular disease

papule - a small inflamed elevation of skin that is nonsuppurative (as in chicken pox)

pustule - a small inflamed elevation of skin containing pus; a blister filled with pus