Visible Seborrheic Dermatitis Outbreak

Description

Centered on the midface, erythema and fine, greasy scale cluster around the alae of the nose and extend into the adjacent nasolabial folds, with the involved skin contrasting against uninvolved cheeks laterally. Superiorly, the cutaneous changes can logically be continuous with the glabella and medial eyebrows, and inferiorly they taper toward the upper cutaneous lip without crossing the vermilion border. Short scalp hair frames the superior contour of the head, a common second site for parallel scaling in seborrheic dermatitis. Color and scale define the lesion margins. Seborrheic dermatitis favors sebum-rich areas because Malassezia yeast and host inflammatory response concentrate where pilosebaceous units are dense, so the perinasal distribution is more than cosmetic. This facial pattern often flares with stress, cold weather, or irritating cleansers, and it becomes a practical differential point against rosacea (papulopustules and telangiectasia) and allergic contact dermatitis (sharper borders matching an exposure pattern). Widespread, refractory seborrheic dermatitis can also be a clue in clinical screening for immunosuppression (including HIV) or neurologic disease such as Parkinson disease. It itches. Use this rendering in dermatology lectures to teach lesion morphology (erythema plus scale) and classic facial topography, or in primary care and telehealth education to support triage decisions and first-line management discussions (ketoconazole or ciclopirox shampoo used as a facial wash, short courses of low-potency topical corticosteroid, or topical calcineurin inhibitors for steroid-sparing control). It also fits patient-facing handouts and medical publishing where a neutral expression and plain background keep attention on the rash distribution. Anatomical accuracy verified by SciePro's Medical Advisory Board.