Localized numbness and pain in the right lateral thigh occurs as a result of lateral femoral cutaneous neuritis on the right side. The lateral femoral cutaneous nerve is a superficial nerve that mainly innervates skin sensation. The lateral femoral cutaneous nerve innervates a palm-sized area on the lateral side of the thigh, at the junction of the upper middle third of the thigh. Injury to the lateral femoral cutaneous nerve can cause numbness or pain, which is sometimes characterized by abnormal sensations, such as a burning sensation or an ant crawling sensation, and sometimes a feeling of heaviness or indescribable soreness and discomfort. The most common cause is chronic strain or cold exposure, resulting in chronic inflammatory injury to the cutaneous nerve, the treatment should be vitamin B1, methylcobalamin, adenosylcobalamin and other drugs to nutritional nerves, promote nerve repair, and at the same time, can be given to activate the blood circulation and improve microcirculation to promote the blood supply of the nerve, such as be prostaglandin sodium, tiantan Tongluo capsule.