Reproductive endocrinology is a field of medicine that identifies and treats infertility in both men and women. Reproductive endocrinology is a surgical subspecialty of obstetrics and gynecology that trains physicians in reproductive medicine addressing hormonal functioning as it pertains to reproduction as well as the issue of infertility. This is a medical specialty for infertility, menopause, and other issues with reproductive hormones. This specialty sometimes is called as reproductive endocrinology and infertility because much of their work focuses on helping women to become pregnant and carry a baby to term. A Reproductive Endocrinologist is a fertility specialist that specializes in Polycystic ovarian syndrome (PCOS), Endometriosis, congenital adrenal hyperplasia, Tubal factor infertility, Male factor infertility, Fertility preservation, Congenital uterine anomalies, Other disorders of the female reproductive tract.