老年瘙痒是临床常见病 ,因年老体衰 ,营血亏损 ,皮肤失养 ,风邪外侵 ,血虚风胜所致。正如《千金方》云 :“风邪客于肌中 ,则肌虚 ,真气发散 ,又挟寒搏皮肤 ,外发腠理 ,开毫毛 ,淫气妄行 ,则为痒也 ,所以风疹瘙痒 ,皆由于此”。现将笔者治本三法举例如下 :1　治痒先治血 ,血行痒 Aged pruritus is a common clinical disease, due to aging and old age, loss of blood in the camp, loss of skin support, invasion of wind and evil, and deficiency of blood deficiency. As the “Qian Jin Fang” cloud: “Wind guilty passengers in the muscles, then muscle weakness, infuriating divergence, but also chills fight the skin, outward coaxing, open hairs, masturbation limping, itching, so rubella itching Because of this.” Now the author of the three methods of treating this example are as follows: 1 itching first blood, blood itch