Photogallery. Follicular occlusion syndrome

Abstract

Hidradenitis suppurativa, dissecting cellulitis of the scalp, acne conglobata and pilonidal sinus ― are four diseases united by similar clinical findings and common mechanisms of pathogenesis. These conditions often coexist. The primer pathogenetic event is stratum corneum thickening and keratin plugging of the hair follicle ductal isthmus. The discovery of this mechanism led to association of all the diseases with the term "follicular occlusion syndrome". If three nosologies are detected follicular occlusion triad is diagnosed, if four are present ― follicular occlusion tetrad.
 We present a photogallery on this problem.