Symptoms of sacrococcygeal nerve damage include sensory impairment in the perineal area and lower limbs, dysfunction of urinary and fecal functions, and so on. 1. Sacrococcygeal nerve damage is mainly manifested as sensory impairment in the innervated area, such as numbness and hypesthesia in the perineal area and hypesthesia in the back of thighs. If the damage is acute, there will be pelvic and lower limb pain. 2. Damage to the sacrococcygeal nerve may cause abnormal sphincter function, which may be manifested as urinary incontinence or fecal incontinence. 3. After sacrococcygeal nerve damage, the muscles in the innervated area, such as the muscles of the back of the thigh, calf, plantar muscles, weakness, and with the development of the disease, muscle atrophy of the lower limbs. When the above symptoms occur, we should consider sacrococcygeal nerve damage, and go to the hospital for MRI and electromyography to further clarify the diagnosis.