For some people with sciatica, sitting is one of the worst parts of the day.
You sit down at your desk and your symptoms gradually build.
You sit in the car and your leg starts aching.
You finish dinner and realize the tingling has moved farther down your leg.
Then you stand up and wonder why something as simple as sitting can make your symptoms worse.
There isn't one universal explanation.
But the pattern can provide useful clinical information.
Sitting changes your body's position
When you sit, your hips and spine move into a different position than when you're standing or walking.
You also stay in that position for longer.
For some people, that position may aggravate their symptoms.
For someone else, sitting may actually feel better than standing.
That's important.
It tells us that the response is individual.
Duration can matter
Sometimes it's not simply the position.
It's the amount of time spent there.
You may be able to sit comfortably for 15 minutes but not two hours.
That difference matters.
Your symptoms may be influenced by how long you've been in one position, how often you change positions and what your overall activity level has been that day.
This is one reason “perfect posture” isn't necessarily the entire answer.
What happens when you stand up?
Pay attention to what happens when you change position.
Does standing reduce the symptoms?
Does it make them worse?
Does walking help?
Does your leg pain move closer to your back?
Does it travel farther down the leg?
These changes can be clinically useful.
NICE recommends that people with low back pain and sciatica receive information tailored to their needs and be encouraged to continue normal activities where possible.
That doesn't mean you should push through every symptom.
It means prolonged avoidance isn't automatically the best strategy either.
Should you stop sitting?
Not necessarily.
If sitting is currently aggravating your symptoms, the solution may be to modify how much you sit while you work on improving your tolerance.
You might experiment with shorter sitting periods and regular position changes.
You may need to adjust your work setup.
You may need to temporarily modify your driving or travel routine.
And you may need an individualized exercise plan.
The right approach depends on the person.
What about stretching?
If sitting aggravates your symptoms, your first instinct might be to stretch your hamstrings or low back.
That may or may not be appropriate.
If your symptoms are nerve-related, aggressive stretching isn't automatically the answer.
A clinician may instead look at how your symptoms respond to different movements and positions.
For some patients, specific movement strategies may be useful.
For others, the emphasis may be on strength, conditioning, activity modification or gradually rebuilding tolerance.
The goal isn't to become afraid of sitting
If you work at a desk, drive for work, travel frequently or simply enjoy sitting down at the end of the day, eliminating sitting forever isn't realistic.
The goal is to help you tolerate the activities your life requires.
That means understanding what currently irritates your symptoms and then gradually improving your capacity.
If sitting is consistently causing pain, numbness or tingling into your leg, an evaluation can help determine whether the symptoms fit a nerve-related pattern and what factors may be contributing.
