Lichen Red Flat Ringed

Lichen ruber planus circinatus (lat. Lichen ruber planus circinatus) is a chronic recurrent skin disease characterized by the appearance of round red plaques with clear boundaries and peeling on the skin and mucous membranes.

The disease begins with the appearance on the skin of one or several round plaques with a diameter of several millimeters to several centimeters. The plaques have a bright red color, clear boundaries and a flaky surface. Over time, the plaques increase in size, merging with each other and forming ring-shaped figures. Typical localization is the dorsum of the hands, feet, and legs. Skin itching is moderate or absent.

The causes of the disease are not completely clear; the role of immune disorders is assumed. Risk factors include stress, smoking, infections, and taking certain medications.

The diagnosis is confirmed by the clinical picture and the results of histological examination. Treatment includes external glucocorticosteroids, antihistamines and keratolytics, phototherapy. The prognosis is favorable, but frequent relapses are possible.