My 17 year old daughter. Her feet and legs go purple, fingers go purple, they are very painful. she faints, drinks alot of water and still cant get enough, then dehydrates. She's been to every type of DR. had a holter monitor that said her heart valve doesn't always open correctly but she will out grow it, was treasted for gout, diabetes, told she prob has a disease that makes her turn purple. but can't explain why she passes out. She's been doing this for 4 years.