Verrucous skin tuberculosis

Verrucous skin tuberculosis is a proliferative skin lesion that occurs after direct infection by skin trauma. The course is slow and benign in skin tuberculosis. It is caused by tuberculosis bacilli exogenously re-infecting an immune body, causing it to produce local wart-like tuberculosis. It is more common in adults, especially in men (70.8%), and the incidence is higher in people who have direct contact with TB patients or TB animals. Infection is common in the exposed area, most common on the back of the hand and the back of the finger. The lesions are characterized by a single papule from the beginning, with a gradually thickening of the central cornea and a wart-like hyperplasia. The course of the disease is extremely slow and does not heal for many years.