title: Acute intermittent porphyria on withdrawal of oral contraceptives.
abstract: A rare presentation of acute Intermittent Porphyria is described, in which withdrawal of an oral contraceptive (Gynovlar 21) provoked the first acute attack.
mesh_terms: D000208:Acute Disease; D000328:Adult; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D011164:Porphyrias / Q000139:chemically induced* / Q000175:diagnosis
chemical_list: D003276:Contraceptives, Oral