Lateral femoral dermatomal neuritis, also known as abnormal sensory femoral pain, is a relatively common peripheral neurological disorder. The clinical manifestations are an ankylosis, numbness or pain in the skin of one or both lateral thighs, which can be aggravated by standing or walking for a long time; localized hyperalgesia or hypersensitivity of the skin, but no muscular atrophy or dyskinesia, the disease is also known as Roth syndrome. Any injury to any segment of the lateral femoral cutaneous nerve can cause this disease, such as spinal proliferative osteoarthropathy, ankylosing spondylitis, and lumbar disc lesions can compress and stimulate the nerve to cause this disease. In addition, systemic diseases such as gout, diabetes, obesity, rheumatic fever, syphilis, ethanol poisoning and even influenza can cause inflammation of the lateral femoral cutaneous nerve and lead to the development of this disease. Some neurological pathologies such as multiple sclerosis, radiculitis, inflammation of the abdominal pelvis, tumors, and stones can also lead to the development of this disease. This shows that the causes of lateral femoral dermatomal neuritis are complex, and the primary cause should be carefully searched for during diagnosis and treatment. The diagnosis of lateral femoral dermatomal neuritis is not difficult and is mainly based on symptoms. The onset of the disease is slow and progressive in middle-aged men. Patients feel pins and needles pain in the skin of the anterolateral thigh, accompanied by abnormal sensations, such as ants walking, burning, coldness, numbness and so on. The pain is intermittent at the onset and gradually becomes continuous, and sometimes the pain can be very intense. The abnormal sensation can be aggravated by rubbing clothes, forceful movements, and prolonged standing or walking. On examination, the sensation, pain and temperature sensation of the anterolateral thigh skin is reduced or even disappears, some of them are accompanied by skin atrophy, but there is no muscle atrophy, tendon reflexes are normal, and there is no motor impairment. The first step in the treatment of lateral femoral dermatomal neuritis is to identify the primary cause and actively treat it to relieve the stimulation of the nerve. In addition, vitamin B1, B2, B12 or methylcobalamin can be given as symptomatic treatment or corticosteroids to nourish the nerve and eliminate the inflammation. For severe pain, analgesics or local closure can be given. In severe cases, the nerve can be severed or neurolysis can be performed if the cause is unknown. Chinese medicine treatment Chinese medicine has a good effect on lateral femoral dermatomal neuritis. Such as acupuncture, plum blossom acupuncture, cupping therapy, combined use has good results. In addition, the method of acupuncture point injection has been found to be more effective.