Back of the hand bruises usually can not be automatically eliminated, can be handled according to different causes, as follows: 1, the lack of subcutaneous fat: some patients with a thin back of the hand, loose skin, subcutaneous fat is too little, especially older patients with aging skin and serious fat loss, will also lead to obvious blood vessels, the appearance of hand bruises, you can properly increase body fat, moderate exercise, when the back of the hand subcutaneous fat gradually increased, the bruises will also 2, fair skin: the skin is too fair, thin stratum corneum, less subcutaneous fat, etc. more likely to make the back of the hand veins exposed, this situation generally can not be eliminated by themselves, if the body does not have a greater impact, no treatment; 3, vasodilatation: hot weather or arm overexertion will lead to vasodilatation, the back of the hand visible veins, usually to lower the temperature or reduce physical labor will be able to 4, upper limb venous reflux disorder: may be caused by the upper limb deep vein thrombosis, upper limb venous congenital stenosis, tumor, and upper vena cava syndrome and other causes of upper limb reflux disorder, causing the back of the hand, arm bruises obvious, by lifting the arm, appropriate massage and other temporary relief of symptoms, after the timely medical treatment to eliminate the bruises.