Sciatica: Why It Happens and What Actually Helps
Most sciatica gets better without surgery — but the path matters. A Houston pain specialist explains what's happening to the nerve and which treatments have real evidence behind them.
Dr. Nikhil Iyer, MD 2 min read
If you've ever had a hot wire of pain run from your low back down the back of your leg, you know sciatica needs no introduction. It's one of the most common reasons patients come to our Houston clinic — and one of the most misunderstood.
What sciatica actually is
"Sciatica" isn't a diagnosis; it's a description. It means a lumbar nerve root — one of the nerves that leaves your spine and joins to form the sciatic nerve — is irritated or compressed. The two most common culprits:
- A herniated disc. The soft center of a spinal disc pushes out and presses on the nerve, and the disc material itself triggers intense chemical inflammation around it.
- Spinal stenosis. Age-related narrowing of the canal crowds the nerves, which tends to cause symptoms with standing and walking.
The distinction matters because the treatment path — and the timeline — differs for each.
The good news most people aren't told
The majority of disc-related sciatica improves substantially within weeks to months, without surgery. Herniated discs shrink over time; your immune system literally resorbs the herniated material. The goal of treatment is to keep you functional and out of severe pain while that natural healing happens.
That's where the plan matters:
- Stay moving. Bed rest beyond a day or two consistently makes outcomes worse. Gentle walking and positional relief are the starting point.
- Calm the nerve. Anti-inflammatories, a short course of nerve-pain medication, and time help many people through.
- Targeted injections when pain is winning. An epidural steroid injection delivers anti-inflammatory medication directly to the inflamed nerve root under X-ray guidance. For patients whose pain is blocking sleep, work, or physical therapy, this can be the bridge that carries them through the natural healing window.
- Physical therapy to prevent the sequel. Once pain is controlled, building core and hip strength lowers the odds of a repeat episode.
When it's more urgent
A few symptoms change the calculus and warrant prompt medical attention:
- Progressive leg weakness (especially a foot that slaps or drags)
- Numbness in the groin or inner thighs
- New trouble with bladder or bowel control
These are signs of significant nerve compression and should be evaluated emergently.
When to see a pain specialist
If radiating leg pain hasn't meaningfully improved after 2–4 weeks of self-care — or it's severe enough to disrupt sleep and work — a pain medicine evaluation is reasonable. A specialist can confirm which nerve level is involved, review imaging with you honestly, and time an injection so it does the most good. Most patients never need to see a surgeon.
Sciatica is miserable, but it's rarely mysterious. With a precise diagnosis and a plan matched to it, the overwhelming majority of patients get their leg — and their life — back.