polycystic ovary syndrome
"Was diagnosed with PCOS when I was 15, I am now 25.  I just recently got put on Metformin 500mg 2x daily.  I have just about every symptom listed for PCOS and so far the medication only seems to help with my skin disorder acanthosis nigricans.  I have it the inside of my elbows and underneath my breasts and down my abdomen.  It has made it less noticeable.  No luck on reducing the unwanted patches of hair on my chin but tweezers are my best friend.  No weight loss at this time either but it has leveled my blood sugars.  My only complain is the medication has made me lactose intolerant.  Giving up milk and cheese has been hard to where I go off on the medication on the weekend to enjoy food again."