In 1911, Jadassohn1 called attention to a lichenoid exanthem on the trunk, occurring in children suffering from tricophytic kerion. Since that time, many articles on the subject have appeared in European literature, and the word tricophytid is used to describe this eruption and others of the same origin. More recently, a similar series of eruptions called microsporid has been described occurring as a complication of microsporon infection. I propose the word dermatophytid to cover both groups of cases.
The eruption is in many ways analogous to tuberculid, and may assume a variety of clinical forms, the commonest of which is the rapid development of large numbers of lichenoid papules occurring singly or in groups. A scarlatiniform rash has been observed, usually as an early stage of the lichenoid form. Vesicular and vesiculopustular cases are fairly common, and lesions resembling pityriasis rosea are reported. In some cases the eruption has
WILLIAMS CM. DERMATOPHYTIDCOMPLICATING DERMATOPHYTOSIS OF THE GLABROUS SKIN. Arch Derm Syphilol. 1926;13(5):661–669. doi:10.1001/archderm.1926.02370170063004