Ectopic Darier's disease of the cervix: an extraordinary cause of an abnormal smear.

A small number of skin diseases may involve either extremity of the alimentary tract or the vulva. Fortunately for patients and cytoscreeners, they rarely involve the cervix or vagina. When they do, difficulty in diagnosis may arise if a full history is not provided. A case is described of cervicovaginal Darier's disease, which presented with an abnormal cervical smear and led to a dermatological referral.