Table 1.

Criteria for the diagnosis of PCOS.

1990 National Institutes of Health (NIH) Criteria	Rotterdam Criteria	Androgen Excess Criteria
Demonstrates both: Clinical and/or biochemical hyperandrogenism Oligo- or anovulation	Demonstrates at least two of three: Clinical and/or biochemical hyperandrogenism Oligo- or anovulation Polycystic ovaries	Demonstrates: Hirsutism and/or hyperandrogenemia Also demonstrates at least one: Oligo- or anovulation Polycystic ovaries
Plus: Exclusion of other causes of androgen excess and anovulatory infertility	Plus: Exclusion of other causes of androgen excess and anovulatory infertility	Plus: Exclusion of other causes of androgen excess and anovulatory infertility

Exclusion of thyroid disease, disorders of the adrenal glands (including nonclassical congenital adrenal hyperplasia), and hyperprolactinemia.