In short
Sciatica describes nerve pain radiating from the lower back down one leg, and most cases ease within weeks without surgery.
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01
What Sciatica Actually Is
Sciatica is not a diagnosis on its own but a description of pain that travels along the sciatic nerve, from the lower back through the hip and down one leg. It happens when a nerve root along this pathway gets pressed or irritated, most often near where it exits the spine.
The pain can feel sharp, burning, or like an electric shock, and it usually affects only one side of the body. Numbness, tingling, or weakness in the leg or foot often comes with it, and symptoms tend to worsen with prolonged sitting, coughing, or sudden movement.
02
Why It Happens
A bulging or herniated disc pressing on a nerve root is the most common cause, especially in the lower back. Age-related narrowing of the spinal canal, sometimes called spinal stenosis, or bone spurs pressing on nearby nerves can produce a very similar pattern of pain.
Less often, muscle spasm or an awkward posture held for a long time can irritate the nerve without any structural damage. Risk tends to rise with age, extra body weight, jobs involving heavy lifting or long sitting, and conditions like diabetes that can affect nerve health more broadly.
03
What Usually Helps
Most episodes of sciatica improve on their own within a few weeks. Staying moderately active, rather than resting in bed, tends to support recovery better for most people, alongside gentle stretching and over-the-counter pain relief used as directed on the label.
If pain persists beyond several weeks, keeps worsening, or comes with noticeable leg weakness, a clinician may suggest physical therapy, imaging to look for a cause, or other options suited to what is found. Talking through symptoms with a doctor helps match the approach to the actual problem.
04
When to Seek Emergency Care
In rare cases, severe pressure on the nerves at the base of the spine can affect the nerves that control the bladder and bowel. Sudden loss of bladder or bowel control, numbness around the groin, or new weakness in both legs together are signs of a medical emergency, not something to wait out.
Back pain paired with fever, unexplained weight loss, or pain that follows a significant fall or accident is also worth prompt medical evaluation, since these patterns can point to causes beyond typical nerve irritation.
Sources
- Sciaticamedlineplus.gov
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