My mother is 84, pre-diabetic , takes Janumet (spelling?), has foot pain, tingling, etc... Recently, her feet which became discolored occasionally have begun to turn dark (blue/purple) and remain that way for days on end. She is convinced there is no reason to see a doctor, as there is nothing more they can do to help her. Can you give me some insight to options that might help her so I can persuade her to see a doctor? Additionally, is there a certain specialist I should be looking look for - she currently only sees a GP and a vein specialist...