Leg numbness to see which department, mainly depends on the leg numbness at the same time there is no accompanying cranial symptoms, as follows: 1, orthopedics: If only leg numbness occurs, generally considered to see orthopedics. In orthopedics, there are many diseases that can cause leg numbness, such as lumbar disc herniation compressing the nerve roots, which can cause radioactive pain and numbness in the lower limbs, and lumbar spinal stenosis can appear intermittent claudication, accompanied by numbness in the legs. In addition, the jamming of peripheral nerves, such as the jamming of the anterior lateral femoral cutaneous nerve, can also appear the numbness of the anterior lateral thigh. 2, neurology: if the leg numbness is accompanied by dizziness, headache, insomnia, tinnitus, etc., we should consider and cerebrovascular disease, this time we should go to neurology for examination, head CT and MRI examination.