My 18yo daughter has quite a bit of dark hair on lower stomach and back. periods fairly regular and she has always been thin/no wt.issues. could it be a sign of pcos? what type of doctor should we see to assess if something that needs attention?

See a gynecologist: Polycystic ovary syndrome (PCOS) causes menstrual irregularity and androgen excess in women. Classic features are hirsutism and irregular menstrual cycles. High androgen levels will also cause acne, male pattern baldness, and hair loss. A gynecologist can sort this out with an ultrasound and blood tests and may be able to treat her with estrogen/progesterone combination birth control medications.