Lateral thigh like an electric current for a while may be caused by acute injury, lumbar spine lesion, pear-shaped muscle syndrome and other factors. 1. Acute injury: when the outer thigh suffers acute injury, such as external blow, it may lead to local nerve damage, which will make the outer thigh feel like an electric current, manifested as numbness and pain. 2. Lumbar spine lesions: for example, lumbar disc herniation or lumbar spinal stenosis may cause damage to the nerves that innervate the lower limbs, which may cause numbness and pain in the outer thighs, which may be accompanied by lumbar pain and buttock pain and other symptoms. 3. Piriformis syndrome: it may be related to acute injury or chronic strain injury, due to the symptoms of local congestion and swelling, it may cause compression and stimulation of the sciatic nerve, which will lead to tingling and numbness of the lateral thighs and other symptoms. The lateral thigh like a burst of electric current, and accompanied by other obvious abnormal symptoms, it is recommended to go to the orthopedic department of the hospital for appropriate examination and treatment.