Micropapular tuberculid is the term which we have applied to a form of cutaneous tuberculosis composed of tiny papules occurring on the face. This type, while differing from both lupus miliaris disseminatus faciei and acnitis, may at times resemble rosacea.
Tuberculoderms, although subject to great clinical variations, have a fairly well established course and prognosis, especially in a specific case in which the characteristics conform strictly to a well recognized type of cutaneous tuberculosis. This is true of lupus vulgaris, lupus miliaris disseminatus faciei and acnitis. There are, however, patients on whom lesions are found, particularly on the face, which have a prolonged course and a tuberculoid structure but still do not conform morphologically to any of the aforementioned types.
Lewandowsky1 in 1917 first described such a type of tuberculosis of the skin, which he called rosacea-like tuberculid. His classic description is now well known and has been reintroduced
LAYMON CW, MICHELSON HE. THE MICROPAPULAR TUBERCULID. Arch Derm Syphilol. 1940;42(4):625–640. doi:10.1001/archderm.1940.01490160085012
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