The discovery of Schizosaccharomyces hominis Benedek, 1927, was made five years before the present writing.1 This peculiar parasite was first cultivated from the subcorneal, sago grain-like vesicular efflorescences in a case of cheiropompholyx of Hutchinson. Systematic inquiries conducted along mycologic2 and immunobiologic3 lines then showed evidence that a number of erythematosquamous dermatoses hitherto described under various names are etiologically due, solely or primarily, to Schizos. hominis. The dermatoses thus far recognized as coming under schizosaccharomycosis are: (1) seborrheic eczema of Unna with all its variants4 (séborrhéides of Brocq, Audry and Hallopeau, eczématide of Darier, pityriasis of Sabouraud, exudative and delayed exudative eczematoid of Rost, etc.); (2) sycosis vulgaris sive coccogenes;5 (3) seborrheic rosacea; (4) pityriasis rosea of Gibert;6 (5) pompholyx of Hutchinson (dyshidrosis of Tilbury Fox7) ; (6) the so-called constitutional infantile eczema described by pediatricians, and (7) erythroder