title: Generalized pustular psoriasis or drug-induced toxic pustuloderma? The use of patch testing.
abstract: Pustular psoriasis is a rare but serious form of psoriasis. Clinically it may be difficult to differentiate from a pustular drug reaction. We report a case of a generalized pustular eruption triggered by exposure to amoxycillin in a patient with chronic psoriasis. Patch testing to 1% and 5% amoxycillin preparation confirmed a delayed hypersensitivity reaction.
authors.affiliation: St. John's Institute of Dermatology, St. Thomas' Hospital, London, UK.
authors.forename: L R
authors.initials: LR
authors.lastname: Whittam
authors.forename: S H
authors.initials: SH
authors.lastname: Wakelin
authors.forename: J N
authors.initials: JN
authors.lastname: Barker
mesh_terms: D000658:Amoxicillin / Q000009:adverse effects*; D003937:Diagnosis, Differential; D003875:Drug Eruptions / Q000175:diagnosis* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D010328:Patch Tests; D010406:Penicillins / Q000009:adverse effects*; D011565:Psoriasis / Q000175:diagnosis*
chemical_list: D010406:Penicillins; D000658:Amoxicillin