MICROPAPULAR tuberculid is rather common in Negroes but less so than papulonecrotic tuberculid. Many cases escape detection because of the frequent sparseness of the eruption and also because the microscopic picture may prove misleading. In my experience the majority of patients exhibit a scanty type of eruption, but lesions may be profuse enough to involve the entire body.
The eruption usually makes its appearance first on the face and may be confined entirely to this area, but there is a tendency to generalization and lesions have been noted everywhere on the cutaneous surface, except on the palms and soles and in the oral cavity. On the extremities there is a predilection for the extensor surfaces. Involvement of the scalp is not uncommon, the lesions being most numerous on the perimeter and possibly confined exclusively to the margins. The vermillion border of the lips, the canthi and the alae
IRGANG S. MICROPAPULAR TUBERCULID IN THE NEGRO. Arch Derm Syphilol. 1946;53(4):372–380. doi:10.1001/archderm.1946.01510330070007
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