Morocco is an endemic area of tuberculosis, where lung disease occupies the first place. Skin tuberculosis represents only 1 to 2% of extra pulmonary tuberculosis [1]. Its diagnosis is difficult to establish because of the polymorphism of the anatomo-clinical presentation and the multiplicity of differential diagnoses. We report the case of a child who had developed bifocal tuberculosis after tuberculous contagium, and the skin tuberculosis led to discovering pulmonary tuberculosis. Cutaneous tuberculosis occurs in several clinical forms that can coexist or complicate each other. It remains a current disease, the diagnosis of which is difficult because it is often unknown.In the case of a secondarily ulcerated and irregular nodular skin lesion, failure to respond to conventional treatment should lead to histological and bacteriological examination. Peri-orificial cutaneous tuberculosis, although rare, must also be mentioned in the face of a symptomatology that is dragging and resistant to symptomatic treatment. The improvement of living conditions and the implementation of an anti-tuberculosis control approach are essential for the eradication of the disease.