DO_infectious_disease_slim superficial mycosis tinea nigra A superficial mycosis that is a superficial fungal infection of the skin characterized by brown to black macules which usually occur on the palmar aspects of hands and occasionally the plantar and other surfaces of the skin, caused by Hortaea werneckii, which is a common saprophytic fungus believed to occur in soil, compost, humus and on wood in humid tropical and sub-tropical regions. DOID:8912 UMLS_CUI:C0152067 disease_ontology SNOMEDCT_US_2025_09_01:1022006 ICD10CM:B36.1 MESH:C000656904 ICD9CM:111.1 Infection by Cladosporium werneckii Keratomycosis nigricans Tinea palmaris nigra microsporosis nigra