Patients with sacral cysts may exhibit the following symptoms: 1. There may be no clinical symptoms, which is seen when the patient has a cyst but no nerve compression. 2. Pain in the lower back or one lower limb may occur, which is often seen when the sacral cyst has caused compression of the relevant nerve. 3. There may be some sensory numbness. 3. Numbness may occur. For example, there may be some numbness in the perineal area or thigh area. 4, there may be some muscle strength loss, for example, the patient may feel weakness in the lower limbs when walking, or there may be some dysfunction of bowel control, that is, incontinence. 5, there may be some lower limb claudication, which is often caused by This situation is often caused by some serious nerve compression inside the sacral canal, which may cause the patient to have intermittent claudication, that is, after walking for a period of time, there will be obvious pain in the lower back and lower limbs, so that they can not walk, but after a period of rest, they can continue to walk again.