title: Allergy to piperazine in a patient sensitive to ethylenediamine.
mesh_terms: D000328:Adult; D000969:Antinematodal Agents / Q000009:adverse effects* / Q000627:therapeutic use; D003876:Dermatitis, Atopic / Q000139:chemically induced*; D003877:Dermatitis, Contact / Q000209:etiology; D003875:Drug Eruptions / Q000209:etiology*; D005029:Ethylenediamines / Q000009:adverse effects*; D006801:Humans; D008297:Male; D010123:Oxyuriasis / Q000188:drug therapy; D000077489:Piperazine; D010879:Piperazines / Q000009:adverse effects*
chemical_list: D000969:Antinematodal Agents; D005029:Ethylenediamines; D010879:Piperazines; D000077489:Piperazine; C031234:ethylenediamine