The clinical manifestations of lateral femoral dermatomal neuritis are numbness, ankylosis, tingling, burning, chill, decreased sweating, and heaviness in the anterior lateral femur. Lateral femoral cutaneous neuritis, also known as abnormal sensory femoral pain, is not the same disease as lateral femoral cutaneous nerve entrapment syndrome. It is characterized by pain and abnormal sensation in the skin of the anterolateral thigh and is also known as Roth syndrome. Examination of anterolateral femoral numbness and ankylosis: Most commonly seen in obese men between the ages of 20 and 50. The symptoms are numbness, ankylosis, tingling, burning, coldness, decreased sweating and heaviness in the lateral anterior femur, with numbness being the most common. The symptoms may increase with physical exertion and prolonged standing, and may be relieved after rest. On physical examination, there may be varying degrees of superficial sensory loss or absence, mainly pain and temperature sensation is reduced while pressure sensation exists. The disease is often unilateral, chronic in course, sometimes mild and sometimes severe, often for months to years, can be considered. Routine blood tests: Blood tests are performed to detect and analyze the quantity and quality of the three systems of the blood, namely red blood cells, white blood cells and platelets. These three systems, together with plasma, make up the blood, which flows constantly in the body’s circulatory system and participates in the body’s metabolism and every functional activity, so blood plays an important role in ensuring the body’s metabolism, functional regulation and the balance of the body’s internal and external environment. Routine physical examination: Routine physical examination is a regular health examination to grasp the status of one’s health. It includes examinations of general morphology, internal medicine, surgery, ophthalmology, otorhinolaryngology, stomatology, gynecology radiology, laboratory, auxiliary medicine, etc., which can reflect the current stage of health condition and can be prevented and treated in time.