superficial mycosis tinea nigra SNOMEDCT_US_2020_03_01:1022006 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 ICD10CM:B36.1 ICD9CM:111.1 Infection by Cladosporium werneckii Keratomycosis nigricans Tinea palmaris nigra microsporosis nigra