Low back pain: When should you see a doctor?

If you have one or more of the following symptoms, you should have them checked out by a doctor:

• Pain that spreads down to below your knee or into a foot and is accompanied by numbness, tingling or muscle weakness: These are typical symptoms of sciatica (a problem with the sciatic nerve), usually caused by a slipped disc. But they can also be a sign of cauda equina syndrome. If the symptoms are severe – and particularly if there are signs of leg paralysis – you should see a doctor immediately.
• Problems urinating (peeing) or passing stool (pooping): Other possible signs of cauda equina syndrome include trouble noticing that your bladder is full, no longer clearly feeling the urge to pee when your bladder is full, a reduced ability to feel your bladder emptying when you pee, or not being able to voluntarily stop peeing mid-flow. Problems with the sphincter muscle, leading to trouble passing stools (pooping) or holding them in, can also be a sign of nerve damage.
• Numbness in the buttocks or genital area, or around the anus: These could be signs of cauda equina syndrome, too. You may notice numbness around the anus when wiping yourself after going to the toilet, for example.
• Fever, chills or night sweats: These could be signs of an infection in the spine.
• Unexplained weight loss and physical weakness (particularly with a history of cancer): These are possible signs of a tumor. Tumors in the spine are usually metastatic tumors that have developed from a previous cancer tumor (in the breast or prostate gland, for instance). Physical weakness can also be a sign of infection.
• Low back pain after an accident. If your back hurts after a road accident or sports accident, or after falling from a great height, you may have a bone fracture. The bones of older people with low bone density (osteoporosis) are more fragile. They might fracture a back bone simply by stumbling and falling while walking, lifting a heavy object the wrong way or twisting their spine awkwardly.

These are only possible signs of a serious problem and don't necessarily mean that you have one. It is important to see a doctor for a proper assessment.

The doctor will assess your symptoms, taking into account various aspects such as

• Your age
• Your biological sex
• Previous illnesses
• Whether you're taking medication (for example, long-term treatment with steroids)
• Previous treatments (like injections or operations)

The doctor will also examine your back and, for example, feel your spine, stretch your sciatic nerve and check the reflexes in your knees and feet.

A serious illness can usually be ruled out through the questions you answer, your description of the symptoms, and the physical examination. Depending on your individual situation, the doctor may arrange for further examinations. For example, if they think you might need urgent treatment or have a serious medical condition, you might have an x-ray, magnetic resonance imaging (MRI) scan or blood tests.

Research has shown that back pain is rarely dangerous: It is only caused by a serious medical problem in less than 1% of people who go to their family doctor because of the pain. In most of these more serious cases, the problem is a fractured spine due to osteoporosis. Even in the emergency room, less than 5% of people with back pain have a condition that needs urgent treatment.

Cauda equina syndrome is very rare: It occurs in less than 3 out of 100,000 adults each year.