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JAMA. 1930;95(15):1111-1112. doi:10.1001/jama.1930.02720150051020.
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Palmar Mycotic Keratosis  Dr. Olympio da Fonseca, Jr., recently delivered a lecture at the Academia Nacional de Medicina on palmar mycotic keratosis, on which subject he has made extensive studies in collaboration with Dr. A. Ferreira da Rosa. The speaker said that the disease was observed first in Brazil in 1891 by Dr. Alexandre Cerqueira, a professor at the Faculty of Medicine of Bahia. Aldo Castellani, after interesting studies on the subject, which he began at Ceylon in 1905, succeeded in isolating the etiologic agent, which is a type of imperfect fungus of the genus Cladosporium. The disease begins as many small dots, either isolated or in small groups, in one or both hands, or sometimes in other parts of the body. The small dots increase in number and in size after several months of evolution, and when the lesion has completely developed they become confluent, forming one lesion in


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