Oral Contraceptives and Porphyria Cutanea Tarda
Overview
Affiliations
The clinical and biochemical findings in two cases of porphyria cutanea tarda (PCT) are presented. The cases are unique in their early age of onset (24 and 22 years) and their apparent precipitation by low-dosage oral contraceptives.Review of the literature reveals these to be the two youngest patients with estrogen-induced PCT. Only one other case of PCT induced by low-dosage oral contraceptives has been reported. In most cases of PCT induced by estrogens, high dosages have been taken by patients over age 35.
Porphyria cutanea tarda: comparison of cases precipitated by alcohol and estrogens.
HABERMAN H, Rosenberg F, Menon I Can Med Assoc J. 1975; 113(7):653-5.
PMID: 1181022 PMC: 1956714.
Contraceptive pill-induced porphyria cutanea tarda presenting with onycholysis of the finger nails.
Byrne J, Boss J, Dawber R Postgrad Med J. 1976; 52(610):535-8.
PMID: 981098 PMC: 2496458. DOI: 10.1136/pgmj.52.610.535.
Decreased liver cytochrome P-450 in rats caused by norethindrone or ethynyloestradiol.
White I, Muller-Eberhard U Biochem J. 1977; 166(1):57-64.
PMID: 901418 PMC: 1164956. DOI: 10.1042/bj1660057.
Hormonal steroid contraceptives: a further review of adverse reactions.
McQueen E Drugs. 1978; 16(4):322-57.
PMID: 359313 DOI: 10.2165/00003495-197816040-00003.