dermatophytid


dermatophytid

 [der″mah-tof´ĭ-tid] a secondary skin eruption which is an expression of hypersensitivity to a dermatophyte, especially Epidermophyton, infection, occurring on an area remote from the site of infection, most commonly on the hands, wrists, and sides of the fingers in association with tinea pedis.

der·ma·toph·y·tid

(der-mă-tof'i-tid), An allergic manifestation of dermatophytosis at a site distant from that of the primary fungous infection. The lesions, usually small vesicles on the hands and/or arms, are devoid of the fungus and may become extensive, covering wide areas of the body and causing extreme discomfort to the patient.
See also: id reaction.
A skin infection by mould-like fungi known as dermatophytes—e.g., Trichophyton rubrum, T mentagrophytes, Microsporium canis, M gypsum, rarely also Epidermophyton spp; in children, T canis is the most common agent
DiffDx Nonfungal dermatopathies—e.g., erythema annulare, ‘herald patch’ of pityriasis rosea, atopic dermatitis, other dermatitides
Management Most resolve without therapy—otherwise, miconazole; if severe, griseofulvin

der·ma·toph·y·tid

(dĕr'mă-tof'i-tid) An allergic manifestation of dermatophytosis at a site distant from that of the primary fungal infection. The lesions, usually small vesicles on the hands and arms, are devoid of the fungus and may become extensive, covering wide areas of the body and causing extreme discomfort.
See also: -id (1) , id reaction