Lower Back Pain – Causes, Symptoms and Treatment
Lower back pain is one of the most common health complaints worldwide. Learn about its causes, symptoms, diagnosis, and treatment options.
Things worth knowing about "lower back pain"
Lower back pain is one of the most common health complaints worldwide. Learn about its causes, symptoms, diagnosis, and treatment options.
What is Lower Back Pain?
Lower back pain, also known medically as lumbalgia or lumbar pain, refers to pain localized in the region of the lumbar spine -- the lower section of the spine between the ribcage and the pelvis. It is one of the leading causes of disability globally and affects people of all ages. The pain can range from a dull, persistent ache to a sharp, sudden sensation that limits movement.
Lower back pain is classified by duration: acute (up to 6 weeks), subacute (6 to 12 weeks), and chronic (more than 12 weeks).
Causes
In the majority of cases, lower back pain is classified as non-specific, meaning no clearly identifiable structural cause can be found. Common contributing factors include:
- Muscle strain and overuse
- Prolonged sitting and physical inactivity
- Poor posture during daily activities or at work
- Excess body weight
- Psychological stress and emotional strain
Specific causes involve an identifiable underlying condition:
- Herniated disc (disc prolapse): Disc material protrudes and compresses nearby nerves.
- Spinal stenosis: Narrowing of the spinal canal, which can compress the spinal cord or nerve roots.
- Spondylolisthesis: A vertebra slips forward over the one below it.
- Facet joint arthritis
- Osteoporosis with vertebral fractures
- Inflammatory conditions such as ankylosing spondylitis
- Rarely: tumors, infections, or internal organ conditions (e.g., kidney disease)
Symptoms
Symptoms can vary widely depending on the underlying cause. Common signs include:
- Dull, aching, or sharp pain in the lower back
- Morning stiffness in the spine
- Pain radiating into the buttocks, hips, or legs (sciatica)
- Numbness or tingling sensations in the legs
- Reduced range of motion when bending or twisting
- Muscle tightness and spasms
Warning signs (Red Flags) that require immediate medical attention:
- Paralysis or significant muscle weakness in the legs
- Bladder or bowel dysfunction (e.g., incontinence)
- Pain following an injury or fall
- Unexplained weight loss and night sweats
- Pain that worsens when lying down
Diagnosis
Diagnosis begins with a thorough medical history and physical examination. Depending on the suspected cause, further investigations may include:
- X-ray of the spine: To rule out fractures or misalignment
- Magnetic Resonance Imaging (MRI): Detailed visualization of discs, nerves, and soft tissues
- Computed Tomography (CT): Preferred for assessing bony structures
- Blood tests: To exclude inflammatory or systemic conditions
- Electromyography (EMG): To assess nerve function when leg symptoms are present
Treatment
Treatment depends on the cause and duration of symptoms. A key principle in modern guidelines is: staying active is better than bed rest. Prolonged inactivity is not recommended.
Conservative Treatment
- Physiotherapy: Targeted exercises to strengthen core muscles and improve spinal mobility
- Pain medication: Non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen or diclofenac; muscle relaxants for severe spasms
- Heat or cold therapy: To relieve muscle tension and reduce pain
- Manual therapy / Osteopathy: Joint mobilization and soft tissue techniques
- Acupuncture: May be beneficial for chronic low back pain
- Psychological therapy: Particularly for chronic pain with psychosocial components (e.g., cognitive behavioral therapy)
Surgical Treatment
Surgery is rarely needed and is typically reserved for cases with severe neurological involvement. Common procedures include:
- Microdiscectomy (removal of herniated disc material)
- Laminectomy (widening of the spinal canal)
- Spinal fusion (stabilization of vertebral segments)
Prevention
Many cases of lower back pain can be prevented or reduced in frequency with the following measures:
- Regular physical activity (e.g., swimming, cycling, yoga)
- Strengthening core and back muscles
- Ergonomic workspaces and proper lifting techniques
- Maintaining a healthy body weight
- Stress management and adequate sleep
References
- Koes BW, van Tulder M, Lin CW, et al.: An updated overview of clinical guidelines for the management of non-specific low back pain in primary care. European Spine Journal, 2010; 19(12): 2075-2094.
- World Health Organization (WHO): Musculoskeletal conditions. Fact Sheet, 2023. Available at: https://www.who.int/news-room/fact-sheets/detail/musculoskeletal-conditions
- Chou R, et al.: Diagnosis and Treatment of Low Back Pain: A Joint Clinical Practice Guideline from the American College of Physicians and the American Pain Society. Annals of Internal Medicine, 2007; 147(7): 478-491.
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