Three painters from the Renaissance were found to show tinea capitis or even psoriasis rather than leprosy as the artists intended. The artists may have been influenced by the severity of tinea capitis at that time and also by emphasis on details of scalp lesions in Leviticus 13. One canvas, by Ferdinand Bol, suggests favus.
Goldman L. Favus Mistaken for Leprosy by Artists of the Renaissance. Arch Dermatol. 1968;98(6):660-661. doi:10.1001/archderm.1968.01610180104016