Tuberculids appearing in the form of plaques are rare and are a type not usually mentioned in the descriptions of tuberculosis of the skin.
Hauser,1 in 1920, reported two cases of large papular and annular tuberculids. His case showed no signs of suppuration or later necrosis and did not fit into the usual group of tuberculids. Hauser gave them a special designation, "Large, papular, grouped and plaque formed tuberculide." He stated that such forms have rarely been mentioned in the literature.
J. Jadassohn2 mentioned a grouped, large, papular tuberculid in his paper before the Eleventh German Dermatological Congress in Vienna, in 1913.
Hauser was of the opinion that the microscopic picture depended on differences in the immunity reactions of the tissues. Different pathologic conditions can be caused by tubercle bacilli coming by way of the blood stream and lodging in the skin. An inflammatory necrotic process causes
SWEITZER SE. TUBERCULIDE EN PLAQUE. Arch Derm Syphilol. 1931;24(5):842–852. doi:10.1001/archderm.1931.01450010854010
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