Re: Teenager with purple feet!
It sounds like possible secondary Raynaud's due to the sores you are describing. Does she experience any pain, or numbness ( pins and needle's) when they start to change colors? You may want to have your doctor run some blood test. It is possible for Raynaud's to be linked to Connective Tissue Disorders like Scleroderma, and lupus. I have Raynaud's and experience red, white, purple, and black feet, and I also have developed ulcer's on my toes as well. This stuff is stressful, and can get scary, so the more knowledge you have the better! Hopefully her symptoms start to improve. Best of luck to her.