The oral retinoids isotretinoin and etretinate are uniquely effective
in the treatment of severe cystic acne and keratinisation disorders. B
ecause of their known teratogenicity, there are strict prescription gu
idelines, but exposure during pregnancy still occurs. A dedicated effo
rt by women and their clinicians is required, involving patient select
ion, education and informed consent, detailed contraceptive counsellin
g, and careful monitoring and management, including pregnancy testing
before commencement of therapy.