Norwegian scabies following topical steroid therapy.

Introduction Reports of Norwegian or crusted scabies occurring in England are rare (Calnan, 1950). In this condition itching is not a constant symptom, burrows may not be present and the acarus may be found on the head and neck. The acarus is seen within scales and the gross hyperkeratosis may give the skin the appearance of the bark of a tree. Norwegian scabies has been reported in mental defectives (Zoon and Mali, 1949; Calnan, 1950; Maguire and Kligman, 1960), in cases of lymphoma and leukaemia (Logan, Grant and Keczkes, 1967; Walshe, 1967) and during immunosuppressive therapy (Paterson, Allen and Beveridge, 1973). It is frequently diagnosed after the onset of an epidemic (Ingram, 1951; Wells, 1952). Recently an atypical case of scabies was reported in