How Is Lower Back Pain Categorised?
Clinicians usually group lower back pain into three broad categories. This helps guide diagnosis, treatment, and the urgency of further investigation.
- Specific spinal pathology: less than 1% of cases. These are less common but more serious causes such as fracture, infection, inflammatory disease, malignancy, or cauda equina syndrome.
- Radicular syndrome: about 5% to 10% of cases. This is pain caused by irritation or compression of a spinal nerve, often including leg pain, pins and needles, numbness, or weakness.
- Non-specific lower back pain: about 90% to 95% of cases. This is the most common presentation, where pain arises from the back region but no single structure can be identified with confidence.
Common Causes of Lower Back Pain
Non-specific lower back pain is the most common category. It often relates to a combination of movement overload, reduced conditioning, joint irritation, muscle strain, ligament sprain, disc irritation, stress, poor sleep, or prolonged postures. Many people improve with sensible activity, guided manual physiotherapy, and progressive back exercises.
Some people have more specific diagnoses. A bulging disc may irritate nearby nerves. A pulled back muscle can cause local pain after lifting or sport. Degenerative disc disease, lumbar facet joint pain, and sacroiliac joint pain can also contribute to symptoms.
Why Does Lower Back Pain Sometimes Travel Into the Leg?
Lower back pain that spreads into the buttock, thigh, calf, or foot may suggest nerve irritation. This pattern often occurs with sciatica, a pinched nerve, or other radicular syndromes. Symptoms may include sharp pain, burning, tingling, numbness, or weakness. However, not all leg pain comes from a nerve, so assessment still matters.
Who Gets Lower Back Pain?
Lower back pain can affect teenagers, adults, office workers, tradies, parents, athletes, and older adults. Risk often increases with sudden workload changes, repetitive lifting, long periods of sitting, deconditioning, poor sleep, stress, smoking, previous episodes of back pain, and reduced movement confidence. Good habits such as regular exercise and better posture may help reduce flare-ups.
When Should You Worry About Lower Back Pain?
You should seek urgent medical care if lower back pain is linked with bladder or bowel changes, saddle numbness, significant leg weakness, fever, unexplained weight loss, major trauma, or constant night pain. Severe or worsening symptoms can point to conditions that need prompt investigation. For a practical guide, read severe back pain: causes, symptoms, what to do and when.
How Is Lower Back Pain Managed?
Treatment depends on the cause, your symptoms, and how long the pain has been present. Physiotherapy may include education, movement advice, activity modification, hands-on treatment, graded strengthening, mobility work, and a return-to-work or return-to-sport plan. Many people also benefit from learning the best treatment options for back pain and using a structured back pain prevention plan.
Current clinical guidance supports staying active, avoiding unnecessary bed rest, and using exercise-based care for most uncomplicated cases of lower back pain. Healthdirect also provides a helpful overview of back pain and when to seek medical review.
What Does Recent Research Say?
Research consistently shows that lower back pain is a major global health issue and a leading cause of disability. Evidence also supports non-surgical management for many uncomplicated cases, particularly education, exercise, and a personalised rehabilitation plan based on symptoms, function, and activity goals.
