The severest form of acne, composed of painful, large inflammatory nodules and cysts with subsequent severest scarring; usually seen in males.

This rare but serious form of inflammatory acne develops primarily on the jawline, cheeks, back, buttocks and chest. In addition to the presence of pustules and nodules, there may be severe bacterial infection as nodules become connected to one another deep beneath the surface of the skin. If not treated, acne conglobata can lead to scarring.

A very severe type of acne in which nodules are connected beneath the skin surface to other nodules or acne lesions.

Form of severe acne, it is extremely painful and usually causes disfigurement.

A very severe kind of acne in which nodules are linked under the skin surface to other nodules or acne lesions.