Red dots on the hands are painless and itchy, which may be caused by purulent granuloma, purpura, senile hemangioma and other diseases, and patients should consult a doctor in time to clarify the cause of the disease. 1. Pyogenic granuloma: If there are red dots on the hands that do not hurt or itch after a traumatic injury, they may be benign red nodular hyperplasia of the skin, i.e. pyogenic granuloma. 2. Purpura: red dots on the hands without pain or itching may also be caused by purpura, mostly blood diseases caused by bleeding spots on the skin, pressure does not fade. 3. Elderly hemangioma: red dots on the hands are painless and itchy, may also be caused by elderly hemangioma, is a common benign proliferative tumor. There may be other causes of red dots on hands without pain and itching, it is recommended to go to the hospital in time, clear diagnosis, symptomatic treatment.