sebaceous follicle

The bumps are caused by acne and found at the opening of a sebaceous follicle (pore).

Acne affects mostly skin with the densest population of sebaceous follicles; these areas include the face, the upper part of the chest, and the back.

Each labium majus has two surfaces, an outer, pigmented and covered with strong, crisp hairs; and an inner, smooth and beset with large sebaceous follicles.

In 1927 he described for the first time what was to be called Unna's disease, a chronic disease of the skin with seborrhea of the scalp and of the areas in the face and trunk that are rich in sebaceous follicles.