Late cutaneous reactions in patients with delayed pressure urticaria.
Late cutaneous reactions ( LCRs ) have been described in patients after allergen skin testing, skin testing with heterologous anti-human IgE, autologous skin-blister fluid, and, variably, after 48/80 injection. We report our results of skin testing patients with delayed pressure urticaria ( DPU ), chronic urticaria, and normal volunteers with histamine and 48/80. All patients with DPU had LCRs after 48/80. No patients in either of the other groups developed LCRs . This may be a clue to pathogenic mechanisms involved in DPU .
D000328:Adult; D005260:Female; D006632:Histamine / Q000008:administration & dosage; D006801:Humans; D006968:Hypersensitivity, Delayed / Q000276:immunology*; D007428:Intradermal Tests; D008297:Male; D008875:Middle Aged; D011312:Pressure; D013997:Time Factors; D014581:Urticaria / Q000276:immunology*; D003189:p-Methoxy-N-methylphenethylamine / Q000008:administration & dosage
D003189:p-Methoxy-N-methylphenethylamine; D006632:Histamine