How long does sciatica last, and when should you see a physiotherapist?

When that sharp, radiating pain travels from your lower back down into a leg, the first thing most people want to know is simple: how long does sciatica last? It is one of the most common questions we hear, and the honest answer is reassuring for the majority. Sciatica is usually a self-limiting problem that settles with time and sensible activity. This guide walks through the typical timeline, what you can safely do in the early weeks, the warning signs that need prompt attention, and where physiotherapy fits, whether in one of our West End clinics or at home.

How long does sciatica last?

Most sciatica improves within four to six weeks and settles over a few months, and only a minority runs on longer than that.

The reassuring pattern is that this tends to get better on its own. The NHS notes that sciatica usually improves over a few weeks to a few months, and that the large majority of people are better within around three months. For some, the pain is short-lived and eases within days. For others, particularly where the aggravating factors continue unchecked, it can grumble on and become more persistent. Knowing that most cases are on an improving path helps you stay calm and keep moving, which is exactly what the recovery needs.

What affects how long sciatica lasts?

How long sciatica lasts depends on the underlying cause, how severe the nerve irritation is, how early you stay active, and the loads you keep putting through your back.

Several things shape the timeline. The cause matters, as sciatica from a disc irritation often behaves differently from sciatica linked to age-related narrowing of the spine. The severity of the nerve involvement matters too, especially if there is weakness or a large area of numbness rather than pain alone. Beyond that, the biggest levers are within your control: staying gently active rather than resting completely, avoiding long unbroken periods of sitting, managing your general health and sleep, and not repeatedly loading the back in the position that flares it. People who start moving and address these factors early tend to recover more smoothly.

What can you safely do in the first few weeks?

In the first few weeks, keep gently active, break up long periods of sitting, use short walks and heat or ice, and rely on movement rather than bed rest.

The old advice to rest up has been overtaken. NHS self-care guidance is to keep active and return gradually to your usual activities, using a heat or ice pack on the sore area and keeping up regular movement. Short, frequent walks are usually helpful, and staying at work in some form is often possible and worthwhile. Simple pain relief, such as over-the-counter medication used as directed, can make it easier to keep moving in those first difficult days, and it is worth pacing activity across the day rather than doing too much in one burst and paying for it afterwards. The aim is to keep the nerve moving and the back working within a level that does not badly flare your symptoms, rather than waiting motionless for the pain to disappear. Nights can be the hardest part, and our post on how to sleep with sciatica covers positions that take pressure off the nerve so you can rest better.

Red flags: when to seek urgent help

Seek urgent help if you develop numbness around the saddle or genital area, lose control of your bladder or bowels, or notice new, significant weakness in a leg.

These are rare, but they matter. The NHS highlights a small number of warning signs that point to a serious condition called cauda equina syndrome, including numbness around the buttocks, genitals or inner thighs, and difficulty passing or controlling urine. If you notice any of these, treat it as an emergency and seek immediate medical care rather than waiting. The same urgency applies to a leg that is rapidly becoming weaker. For the vast majority of people this never happens and sciatica stays a painful but ultimately self-limiting problem, but knowing the signs means you can act quickly in the unusual case that it does.

When and how physiotherapy helps, in clinic or at home

If your sciatica has not improved by around six weeks, or it is limiting your work and sleep sooner than that, a physiotherapy assessment can guide your recovery.

The NHS suggests speaking to a healthcare professional if sciatica has not eased after about six weeks of self-care, or if it is getting worse. That is where we come in. A physiotherapy assessment works out what is driving your particular sciatica, rules out anything that needs onward referral, and sets you up with a graded movement and exercise plan built around your symptoms rather than a generic handout. If you want a fuller picture of the treatment side, our post on whether physiotherapy can help sciatica goes into more detail.

You can see us across our four clinics, and our West End site is handy for anyone around Marylebone, Fitzrovia and Soho. If sciatica has made travel genuinely difficult, our home visit physiotherapy service brings the same assessment and plan to you across North and Central London. Either way, our London physiotherapy team can help you move from waiting it out to actively recovering.

Book a clinic appointment

If sciatica is dragging on, or simply making life harder than it needs to be, a short assessment can point you toward a quicker recovery. Book a clinic appointment at the West End, Hampstead, Highgate or the City, and let our team build you a plan that gets you moving with confidence again.