Some physicians specialize in one field or the other, rather than both.
Obstetrics involves care of women during pregnancy, delivery of babies and follow-up treatment. Gynecology is the diagnosis and treatment of disorders of the female reproductive organs and the reproductive process. Conditions treated are infertility, infections of the genital tract, cancer of the genital organs and complications of pregnancy. Included is prescription for birth control and performance of sterilization procedures. Pelvic surgery, including hysterectomies may be performed.