What causes the hands to be so cold?

Circulation: This can be isolated phenomenon or associated with other conditions such as scleroderma, crest syndrome, hypothyroidism. The skin should be checked for changes of collagen vascular diseases as well as a general exam for blood pressure, circulation, etc. Vasodilators as cream or systemic drugs can help if necessary.

Cold hand warm heart: The core of the body is warmest. As you move away from the heart, the temperature drops. Since the hands are furthest from the heart, they are the coldest. While the normal core body temperature is 98 degrees fahrenheit, the hands typically are 20 degrees colder. This is why patients with raynaud's disease tend to have cold fingers-they are furthest from the heart. Exercise can help. Wear gloves.