Back pain is one of the most common reasons people see a doctor, and it can range from a dull ache after a long day to something sharper that stops you moving comfortably. Understanding what’s actually happening is usually the first step to knowing what to do about it.
By far the most common cause. Everyday movements, poor posture, lifting awkwardly, or simply a change in activity level can strain the muscles and ligaments supporting your spine. This type of pain is often worse with certain movements, tends to ease with rest, and usually settles within a few weeks.
The discs between your vertebrae act as shock absorbers. If one bulges or presses on a nearby nerve, you may feel pain that radiates from your lower back down through the buttock and leg — commonly known as sciatica. It can also cause tingling, numbness, or a burning sensation along the nerve’s path.
As we get older, the discs and joints in the spine naturally undergo wear and tear — sometimes called osteoarthritis of the spine, or spinal stenosis if it narrows the space around the nerves. This can develop gradually over years and doesn’t always cause symptoms, but when it does, it often shows up as stiffness or pain that’s worse after rest and improves with gentle movement, or the opposite pattern depending on the specific issue.
Occasionally, back pain is a sign of something that needs prompt medical attention — an infection, a fracture, or pressure on the nerves controlling bladder and bowel function. These are rare, but it’s worth knowing the warning signs (see our guide on when to seek help) so you know when to act quickly rather than wait it out.
The right next step depends entirely on what’s actually driving your pain. Most back pain resolves on its own with time, movement, and simple measures. But if it’s persistent, unusual, or accompanied by other symptoms, a proper assessment can save you months of guessing — and rule out anything that genuinely needs urgent attention.
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