A skin problem is sometimes the first sign that you have diabetes. One of these skin conditions is eruptive xanthomatosis, which can make hands and feet itch. It’s caused by uncontrolled diabetes, and it goes away when you can better manage your disease. It can also make you itchy on your arms, legs, and buttocks. Other signs of eruptive xanthomatosis:
Small, yellow bumps on the skin
Redness around the bumps
High cholesterol