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If you have sciatica, sitting for an extended period can sometimes make your symptoms more noticeable.

You might feel relatively comfortable when you first sit down, only to develop an ache in your lower back, buttock or leg after 20, 30 or 60 minutes. Standing up and walking around may then provide some relief.

So why does this happen?

Sitting changes the position and load through your lower back and hips, while also keeping you in one position for an extended period. For some people with sciatica, that combination can aggravate symptoms.

However, there is no single sitting position that causes sciatica in everyone. Sciatic symptoms can have different underlying contributors, so understanding your individual pattern is important.

What is Sciatica?

Sciatica describes symptoms that involve the sciatic nerve or nerve roots contributing to it.

The sciatic nerve travels from the lower back through the buttock and into the leg. When the relevant nerve structures become irritated or compressed, symptoms can include pain, tingling, numbness or weakness travelling down the leg.

Sciatica is therefore different from ordinary lower back pain.

Some people experience symptoms mainly in the buttock or thigh, while others may notice sensations extending further down the leg.

The cause can also vary. Disc-related problems, narrowing around the spinal nerves and other lower-back conditions can contribute to sciatic symptoms.

Why can prolonged sitting aggravate sciatica?

There are several reasons sitting may make symptoms more noticeable.

1. Your lower back stays in one position

When you sit, particularly if you sit for a long period without changing position, your lower back and surrounding muscles remain under a relatively consistent load.

Your body is designed to move and change position throughout the day.

Even a comfortable chair can become uncomfortable when you remain in it for hours.

For someone already experiencing nerve-related symptoms, that sustained position may contribute to increased discomfort.

2. Sitting changes the position of your hips and spine

Sitting involves bending at the hips and usually some degree of spinal flexion.

The amount varies depending on the chair, your posture, your activity and how you sit.

For some people with sciatica, certain positions may increase their symptoms. For others, sitting may actually feel better than standing.

This is one reason general advice such as “always sit up straight” or “never bend your back” is unlikely to work for everyone.

3. You stop moving

Sometimes the biggest issue is not the chair itself.

It is the lack of movement.

Imagine spending an entire morning at a desk, followed by a long drive home and then an evening on the couch. Your spine, hips and legs may spend much of the day in relatively similar positions.

Someone with an irritated lower back or sciatic symptoms may notice this accumulation by the end of the day.

A useful goal is not perfect posture. It is more movement variety throughout the day.

Why does sciatica hurt when sitting but feel better walking?

This pattern is fairly common, although it does not happen to everyone.

Walking changes the position of your hips and spine and allows the muscles around your lower body to work differently.

It also breaks up the prolonged, relatively static position associated with sitting.

If you notice that walking helps your symptoms while sitting makes them worse, that is useful information to tell a healthcare professional.

Your response to different activities can help form part of an individual assessment.

What about sitting on a soft couch?

A couch can be particularly challenging when you have sciatica.

Soft cushions allow your hips to sink down, while a low seat may place your hips and knees in a more flexed position.

You may also find yourself leaning to one side, sliding forwards or curling your legs underneath you.

None of these positions is automatically harmful.

The problem may simply be that you stay there for a long time.

A comfortable position can become an uncomfortable position if you do not change it for an hour or two.

Can your desk setup make sciatica worse?

It can contribute to how you feel during the day.

Consider a typical desk worker who spends several hours sitting with:

• a laptop positioned low on the desk
• limited opportunities to stand
• few breaks between meetings
• a chair that does not suit their body
• one leg tucked underneath them
• a long commute afterwards

There is unlikely to be one single culprit.

Instead, several small factors can combine to create a long period of sitting with little movement.

Should you stretch if sitting makes your sciatica worse?

Not necessarily.

Stretching is often suggested for back and leg pain, but sciatica is not simply a problem of “tight muscles”.

Some stretches may feel helpful for certain people, while others may aggravate their symptoms.

In particular, if a movement increases your leg pain, numbness or tingling, it is worth stopping rather than assuming you need to push through it.

Exercise and movement should be selected based on your symptoms, physical capacity and the likely contributors to your condition.

Can a chiropractor help with sciatica?

Depending on the cause and your individual presentation, chiropractic care may form part of a management plan for some people experiencing lower back and leg symptoms.

An assessment may look at your history, symptoms, spinal and lower-limb movement, strength and the activities that aggravate or relieve your symptoms.

Treatment recommendations should be individual rather than based on the assumption that every case of sciatica is the same.

A chiropractor may also recommend exercises, activity modifications or other strategies to support your recovery. If your symptoms suggest you need another type of medical assessment, referral may be appropriate.

FAQ

Why is my sciatica worse when sitting?

Prolonged sitting can keep your lower back and hips in a relatively fixed position and may aggravate symptoms in some people. The response varies depending on the underlying cause and the individual.

Is sitting bad for sciatica?

Sitting is not automatically bad for everyone with sciatica. However, long periods without changing position may aggravate symptoms for some people.

Is it better to stand or sit with sciatica?

There is no universal answer. Some people feel better standing or walking, while others are more comfortable sitting. Your individual symptom pattern is more useful than a general rule.

Should I sit on a hard or soft chair with sciatica?

Comfort and movement are generally more important than choosing a particular type of chair. A very soft or low couch may encourage positions that some people find uncomfortable, but there is no single chair that is best for everyone.

Can walking help sciatica?

Some people find gentle walking more comfortable than prolonged sitting because it changes the position of the spine and hips and keeps the body moving. However, activity should be adjusted according to your symptoms and capacity.

If sitting is consistently making your sciatica symptoms worse, an individual assessment may help you understand what is contributing to the pattern. Wellbeing Chiropractic has clinics across Melbourne, Sydney and Brisbane. Book an appointment to discuss your symptoms and explore an approach based on your history, examination findings and day-to-day needs.