What causes sciatica?

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Sciatica is caused by the compression or irritation of the sciatic nerve, the longest nerve in your body. It typically presents as a sharp, radiating pain that travels from the lower back through the hip and down the back of one leg. Lumbar Herniated Discs: The most common cause, where the soft inner material of a spinal disc leaks out and chemically irritates or physically presses on the nerve root. Degenerative Disc Disease: As discs wear down with age, they can lose height and stability, leading to inflammatory proteins touching the nerve. Lumbar Spinal Stenosis: A narrowing of the spinal canal that puts pressure on the nerves as they exit the spine. Spondylolisthesis: A condition where one vertebra slips forward over the one below it, pinching the nerve. Piriformis Syndrome: The piriformis muscle in the buttock tightens or spasms, trapping the sciatic nerve underneath it. Pregnancy: Shifts in the center of gravity and hormonal changes that loosen ligaments can increase pressure on the lower back and nerves. The sciatic nerve begins in your lower back (lumbar spine) and is formed by the joining of five nerve roots. When these roots are compressed, the signal transmission is disrupted, causing pain, numbness, or tingling. According to the National Institute of Neurological Disorders and Stroke, sciatica is a symptom of an underlying condition rather than a standalone disease. Data from the American Academy of Orthopaedic Surgeons indicates that most patients with acute sciatica see significant improvement within 4 to 6 weeks of conservative treatment. Research published in the Cochrane Library suggests that for many people, non-surgical interventions like manual therapy and targeted exercise are effective first-line strategies for managing symptoms. Nerve Glides: Sit on a chair, straighten one knee, and flex your ankle toward your head. Perform 10 repetitions, 3 times a day, to gently mobilize the nerve without stretching it aggressively. Ice and Heat: Apply an ice pack for 15 minutes every 2-3 hours during the first 48 hours of a flare-up. Switch to a heating pad for 15 minutes to relax muscles once the sharpest pain subsides. Walking: Maintain light activity rather than total bed rest. Walk for 5-10 minutes on flat surfaces every few hours to keep the spine mobile. Knee-to-Chest Stretch: Lying on your back, pull one knee toward your chest and hold for 30 seconds. Repeat 3 times per side. You should consult a healthcare provider if your symptoms do not improve after one week of self-care. Seek immediate medical attention if you experience "red flag" symptoms such as sudden, severe weakness in your leg, numbness in the "saddle area" (groin/inner thighs), or a loss of bladder or bowel control, which may indicate Cauda Equina Syndrome. Mayo Clinic notes that while rare, these symptoms require urgent surgical evaluation. A licensed chiropractor at The Joint evaluates the alignment of your lumbar spine and pelvis to identify where the nerve is being pinched. The American College of Physicians clinical practice guidelines suggest that spinal manipulation is an effective evidence-based treatment for acute low back pain and radiculopathy (sciatica). Chiropractors use controlled, non-invasive spinal adjustments to improve joint mobility and reduce the mechanical pressure on the sciatic nerve. At The Joint, your doctor may also recommend specific soft tissue work or posture corrections to prevent the recurrence of symptoms. This holistic approach addresses the root cause rather than just masking the pain with medication. Q: Can sitting for too long cause sciatica? A: Yes, prolonged sitting—especially with poor posture—increases pressure on the lumbar discs and can compress the sciatic nerve. Q: Is it okay to exercise with sciatica? A: Low-impact movement like walking or swimming is usually beneficial, but you should avoid heavy lifting or high-impact jumping until the acute inflammation subsides. Q: Does sciatica always affect both l

What causes sciatica?

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