When their skin betrays them, they'll need some mercy, and patients call her, Dr. Mercy. Chicago-based dermatologist, Dr. Mercy Odueyungbo tackles some of the most extraordinary, unique and bizarre skin cases. From giant cysts and lipomas to a woman whose polycystic ovary syndrome has caused her to grow a full beard to another patient with extreme port wine birthmarks on her face, Dr. Mercy is ready and willing to help all patients that walk through her door, no matter their skin condition.