There are little red spots on the hand, no itching, no pain

Small red spots on the hands are not painful or itchy, which may be caused by the following reasons: 1. allergic reaction;2. local congestion caused by external force such as extrusion;3. purpura caused by coagulation mechanism disorder;4. spider nevus;5. hemangioma. It is recommended to see a doctor in time when accompanied by other symptoms.