Medicines for Cauda equina syndrome

What it is

Cauda equina syndrome is a rare but serious condition caused by compression of the bundle of nerves at the base of the spine (the "cauda equina", named for its resemblance to a horse's tail). These nerves control the legs, bladder, bowel and the area around the genitals and back passage. The most common cause is a large slipped (herniated) disc in the lower back, but it can also result from injury, narrowing of the spinal canal, tumours or infection. The warning signs include new or worsening problems with bladder or bowel control (such as difficulty passing or controlling urine), numbness or altered sensation around the genitals, buttocks and inner thighs (the "saddle" area), severe or worsening low back pain with sciatica affecting both legs, and leg weakness or numbness. It is a surgical emergency because pressure on these nerves, if not relieved quickly, can cause permanent loss of bladder, bowel and sexual function and leg weakness.

How it is treated

Cauda equina syndrome is a medical and surgical emergency, and the priority is urgent recognition and treatment. Anyone with the warning signs needs immediate assessment in hospital (via A&E), where an urgent MRI scan confirms the diagnosis and identifies the cause. If cauda equina compression is confirmed, urgent surgery to relieve the pressure on the nerves is usually needed, and the sooner it is done, the better the chance of recovering or preserving bladder, bowel, sexual and leg function. Because outcomes depend heavily on speed, delay must be avoided — which is why the warning signs are treated as red flags that require emergency care rather than waiting. After treatment, recovery varies and may include rehabilitation. The essential message is that new bladder or bowel symptoms, saddle numbness, or severe bilateral sciatica are emergencies.