The lateral femoral cutaneous nerve is mainly composed of the anterior branches of the lumbar II and lumbar III nerve roots, which penetrate from the psoas major muscle and enter the subcutaneous tissue 5 cm below the inguinal ligament, mainly in the skin of the lateral femur. In normal subjects, the lateral femoral cutaneous nerve can also originate from the genitofemoral nerve or the femoral nerve. Because of its anatomical peculiarities, it is often susceptible to trauma, infection or entrapment in clinical practice, and inflammation of the lateral femoral cutaneous nerve may occur. Inflammation of the lateral femoral cutaneous nerve often manifests as numbness and tingling sensation in the distribution area of the lateral femoral cutaneous nerve. The lateral femoral cutaneous nerve is also susceptible to inflammation of the nerve caused by inflammation of the psoas muscle and pelvic area, and most of the inflammation caused by this lateral femoral cutaneous nerve is treated with nerve nutrition therapy.