title: Hypersensitivity reaction to chlorbutol-preserved heparin.
mesh_terms: D000328:Adult; D002724:Chlorobutanol / Q000009:adverse effects*; D004342:Drug Hypersensitivity; D004890:Erythema / Q000139:chemically induced; D005260:Female; D006493:Heparin / Q000008:administration & dosage / Q000009:adverse effects*; D006801:Humans; D010592:Pharmaceutic Aids / Q000009:adverse effects*; D011247:Pregnancy; D011310:Preservatives, Pharmaceutical / Q000009:adverse effects*
chemical_list: D010592:Pharmaceutic Aids; D011310:Preservatives, Pharmaceutical; D006493:Heparin; D002724:Chlorobutanol