question: Hello doctor, My father has diabetes, and recently we noticed that his toes turn to purple at night, espcially when he is not walking or standing. It goes back to normal when he walks for a little bit. We run some tests, and I would like a specialist to look at them. We consulted a cardio doctor but I am not sure they know what is wrong. So, I have the lab results and I need a doctor to give me more information on what they mean and what possible directions we could take. I also want to share the list of drugs they gave him so far.