What is the difference between polycystic ovary syndrome (PCOS) and hypothalamic amenorrhea?
PCOS is the condition of androgen excess when all other causes of androgen excess have been ruled out. It can also cause irregular periods.
Hypothalamic amenorrhea (HA) is the loss of periods due to undereating. It can also present with mild acne, facial hair, and polycystic ovaries.