Feldman Flat Acute Atrophic Lichen

Feldman–Flat–Acuminate–Atrophic–Lichen (FPOL) is a rare and multisystem skin disease characterized by chronic progressive focal lesions of the skin and underlying dermal tissues, as well as mucous membranes and internal organs. Lichen was first described by the German dermatologist Joseph Feldmann in 1887 in patients suffering from cutaneous tuberculosis. The mechanism of development of the disease is still not clear, but it has been proven that the disease is directly related to tuberculosis. Approximately 50% of patients with FPOL develop cutaneous tuberculosis within a year from the date of diagnosis; the remaining patients experience intradermal or extracutaneous forms of tuberculosis. Most often the skin of the toes and hands, as well as the face, buttocks, and genitals are affected. The main difference from the standard form of tuberculosis is the chronic development of the pathological process, which has a tendency to relapse after spontaneous improvement. In some cases, there is a deterioration in the patient's skin condition, probably due to immunodeficiency states of the body, but, as a rule, this condition quickly stabilizes with therapy. The severity of clinical manifestations and their prevalence are individual for each person. Some may experience isolated weakness of the lymph nodes,