Skin Conditions Library
Browse our comprehensive database of 50+ detectable skin conditions
Acne
Acne vulgaris
Acne vulgaris is a very common chronic inflammatory skin condition that affects hair follicles and oil (sebaceous) glands, mainly on the face, chest, back, and shoulders. It shows up as blackheads, whiteheads, red bumps, pus-filled spots, and sometimes deeper nodules, cysts, scars, and dark marks.
Blackhead
Open comedone
An open comedone, or blackhead, is a small plug of oil and dead skin that blocks the opening of a pore and turns dark when exposed to air. It is a non‑inflamed form of acne and most often appears on the face, neck, chest, back, and shoulders. Blackheads are usually harmless but can be a cosmetic concern and may progress to inflamed pimples if bacteria overgrow.