Common causes of black spots on the fingers include bruising, lack of trace elements, bad endings, age spots, and skin pigmentation. If the fingers are squeezed or hit causing bleeding under the skin to form blackened and bruised bruises form spots. If there is a lack of trace elements in the body, black or white spots tend to appear on the fingers or face. If you suffer from anemia or poor peripheral circulation, the local skin of the fingers will also form black spots due to prolonged ischemia. Age spots will appear on the hands and face after entering old age, and they are mostly brown or black spots. If the hands are exposed to the sun for a long time, it will easily lead to local skin pigmentation and the formation of black or brown spots. When there are black spots on hands, you can apply local hot compresses and massage, which can effectively relieve the black spots on hands in the long term.