Condition	Characteristics
Acne vulgaris	Inflammatory process; pustular, nodular, or papular; nonstatic with a waxing and waning course; usually occurs in adolescence, but may also occur in adulthood
Adenoma sebaceum	Erythematous, papulonodular, static lesions in a malar distribution; associated with tuberous sclerosis, seizures, mental retardation, other skin lesions, and hamartomas in other visceral locations; appears in adolescence and young adulthood
Rhinophyma	Occurs in late stages of rosacea; nose is primarily affected; associated with telangiectasia, nodules, papules, and pustules; usually begins between 30 and 50 years of age
Sebaceous hyperplasia	Small (1 to 3 mm) yellow papules with central umbilication and surface telangiectasia; common in older persons
Syringoma	Benign tumors of the sweat ducts; small, flesh-colored, dermal papules, typically on the lower eyelid; occurs between 20 and 40 years of age