A case of infection of the beard with Microsporum canis, identified by cultural and Wood's light examinations, is recorded. Absence of clinical features characteristic of tinea barbae but rather suggestive of bacterial folliculitis seems to invite inquiry as to whether the rare reports on ringworm of the beard due to M canis indubitably indicate its low incidence of occurrence.
LOEWENTHAL K. Tinea Barbae Due to Microsporum Canis. Arch Dermatol. 1965;91(1):60–62. doi:10.1001/archderm.1965.01600070066010