Herniated Disc Warning Signs That Require Urgent Attention

The vast majority of herniated disc symptoms — back pain, leg pain, numbness, tingling — are not emergencies. They are uncomfortable and often disabling, but they do not require a trip to the emergency room. A small number of symptoms, however, indicate a potentially serious neurologic emergency that requires immediate evaluation.

The American Academy of Orthopaedic Surgeons states that "cauda equina syndrome is a surgical emergency."

Cauda equina syndrome occurs when a large disc herniation (or other compressive lesion) severely compresses the bundle of nerve roots at the base of the spinal canal — the cauda equina — that controls bowel and bladder function, sexual function, and sensation in the saddle region. When these nerve roots are severely compressed, permanent neurologic injury can result if decompression is delayed.

Medical source: American Academy of Orthopaedic Surgeons, OrthoInfo — Herniated Disk in the Lower Back. orthoinfo.aaos.org

Go to an emergency room immediately if you develop any of the following:

Sudden inability to urinate, or new loss of bladder control (leaking urine without warning), is one of the most important warning signs of cauda equina syndrome. This is distinct from pre-existing urinary conditions.

New fecal incontinence — loss of control over bowel movements — is another hallmark finding. This is different from constipation, which is a common side effect of pain medications.

Numbness or loss of sensation in the inner thighs, perineum, genitals, or buttocks — the area that would contact a saddle — indicates compression of the sacral nerve roots. This symptom is highly specific for cauda equina involvement.

Progressive motor weakness — particularly foot drop (inability to lift the foot), rapidly worsening difficulty walking, or weakness in both legs simultaneously — warrants urgent evaluation. This is distinct from the mild, stable weakness that may accompany a routine radiculopathy.

Radiating pain, numbness, or weakness in both legs simultaneously is unusual for a single-level disc herniation and raises concern for more extensive compression.

If you develop any of the symptoms above, go to an emergency room. Do not wait for a scheduled office appointment. Cauda equina syndrome is a time-sensitive condition — the sooner decompression is performed, the better the likelihood of neurologic recovery.

If you are unsure whether your symptoms qualify, err on the side of seeking emergency evaluation.

The following symptoms warrant a prompt (not emergency) evaluation with a spine specialist:

• New or worsening leg weakness that is not rapidly progressive
• Significant increase in radiating leg pain
• Symptoms that have not improved after several weeks of conservative care
• Neurologic symptoms (numbness, tingling, weakness) that are new or changing

Patients with urgent but non-emergency spine symptoms can contact the office directly at 405-418-4500. For referring physicians with urgent cases, same-week evaluation is prioritized. Emergency findings should be directed to the nearest emergency room for immediate evaluation.

Related articles: Sciatica and a Herniated Disc Are Not the Same Thing · When Is Surgery Considered for a Herniated Disc? · Herniated Disc Treatment: Where Care Usually Starts

Questions about your symptoms? Request an appointment or call 405-418-4500.

Medical review date: July 2026