Hidradenitis suppurativa, dissecting cellulitis of the scalp, acne conglobata and pilonidal sinus ― are four diseases united by similar clinical findings common mechanisms pathogenesis. These conditions often coexist. The primer pathogenetic event is stratum corneum thickening keratin plugging hair follicle ductal isthmus. discovery this mechanism led to association all with term "follicular oc...

The treatment of acne during pregnancy is often limited by the potential toxicities that are posed to the fetus by the most common and effective acne therapies. As with all dermatoses during pregnancy, the treatment of acne vulgaris in this population requires a thorough understanding of the risks and benefits that are inherent to each treatment. We report on a case of a 30-year-old pregnant pa...

A 23-year-old female patient presented with spontaneous appearance of nail haemorrhages on both hands after a tracking holiday in Peru and Bolivia. At altitudes above 3000 meters, she initially developed painful splinter haemorrhages (figure 1), followed by subungual haematoma (figure 2) and eventually distal onycholysis at all fingernails on both hands (figure 3). Remarkably, her toenails were...