title: Topical steroid induced chronic demodicidosis.
abstract: We report a 39-year-old female patient who developed pruritic erythematous telangiectatic patches with scaly follicular papules on the neck and upper chest for 4 years. Ten per cent potassium hydroxide preparation of skin scrapings revealed Demodex folliculorum. Histology showed three Demodex mites in one of the hair follicles. She was treated with a topical steroid without improvement. The skin lesions and Demodex mite disappeared after a single application of 1 per cent gamma benzene hexachloride but twice daily application of 1 per cent gamma benzene hexachloride for 2 weeks was needed to prevent recurrence.
authors.affiliation: Department of Medicine, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok, Thailand.
authors.forename: A
authors.initials: A
authors.lastname: Sakuntabhai
authors.forename: P
authors.initials: P
authors.lastname: Timpatanapong
mesh_terms: D000287:Administration, Topical; D000328:Adult; D005260:Female; D001556:Hexachlorocyclohexane / Q000008:administration & dosage / Q000627:therapeutic use; D006801:Humans; D008924:Mite Infestations / Q000139:chemically induced* / Q000188:drug therapy / Q000473:pathology; D014222:Triamcinolone Acetonide / Q000009:adverse effects*
chemical_list: D001556:Hexachlorocyclohexane; D014222:Triamcinolone Acetonide