Finger joints melanin precipitation, consider and friction, sun exposure and other factors, can be taken to reduce friction, avoid irradiation, drug intervention and other ways to remove. 1. Reduce friction: Because the joints of the fingers are often subjected to movement and friction, so it is easy to appear melanin precipitation, usually should reduce the activities of the hands, by reducing friction and improve the local melanin precipitation phenomenon. 2. Avoiding irradiation: If patients stay in the environment with strong ultraviolet rays for a long time, subcutaneous pigmentation in the joints may occur due to sunlight irradiation. At this time, it is necessary to do a good job of sunscreen, which is beneficial to the removal of localized melanin precipitation by wearing an umbrella and applying sunscreen. 3. Drug intervention: for finger joints melanin precipitation, you can also follow the doctor’s instructions to use 3% hydroquinone cream, 3% hydrogen peroxide solution and other topical decolorizing agents, can improve the symptoms of local melanin precipitation. Finger joints melanin precipitation if the above intervention after the symptoms do not ease, should promptly consult a professional physician under the guidance of a clear cause before treatment.