title: The effect of H1 and H2 histamine antagonists on symptomatic dermographism.
abstract: In ten patients suffering from symptomatic dermographism the combined administration of chlorpheniramine + cimetidine produced a greater reduction in the weal and flare response provoked by a standardized scratch than the administration of chlorpheniramine alone. There was a statistically significant improvement in the overall assessment of the patient's skin condition with the combined administration of chlorpheniramine + cimetidine. Chlorpheniramine given alone produced no significant benefit whilst cimetidine alone produced a marked exacerbation in itching in nearly half the patients who initially entered the study and was sufficient to require withdrawal.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002744:Chlorpheniramine / Q000009:adverse effects / Q000627:therapeutic use*; D002927:Cimetidine / Q000009:adverse effects / Q000627:therapeutic use*; D004311:Double-Blind Method; D004359:Drug Therapy, Combination; D005069:Evaluation Studies as Topic; D005260:Female; D006146:Guanidines / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011897:Random Allocation; D014581:Urticaria / Q000188:drug therapy*
chemical_list: D006146:Guanidines; D002744:Chlorpheniramine; D002927:Cimetidine