Could use your help docs! my ex thinks he has diabetes by the symptoms but refuses to see a doctor. his feet have turned color?

Many possibilities: There are many things that may cause discoloration of the skin. Several types of inflammatory conditions of the skin, poor circulation, allergic reactions, bacterial, viral or fungal infections, insect bites, friction, and cancer can all cause discoloration of the skin. Have it evaluated by a professional and get the appropriate treatment.