Sciatica

Most people see meaningful improvement within 4 to 6 weeks, and the majority recover within 3 months without surgery. Recovery is rarely linear. Leg symptoms often improve in stages, and some residual sensations can linger for several months even as function returns. The most useful signal I track is whether the pain is moving back up the leg toward the spine (centralizing), which tends to predict a faster recovery.

For most people, yes. Staying active and at work in some capacity is linked to better outcomes. NICE and the Lancet Low Back Pain Series both recommend continued activity rather than bed rest. What usually helps is adjusting how long you sit, how much you lift and how far you drive in the early weeks. Complete rest beyond a day or two tends to slow recovery, not speed it up.

Usually not in the first 4 to 6 weeks. NICE NG59 and the American College of Physicians guidance both recommend reserving MRI for cases with warning signs, weakness that keeps getting worse, or symptoms that do not improve with non-surgical care, where a scan would actually change the plan. Imaging too early often shows disc changes that are present in pain-free people and can lead to treatment you do not need.

Usually yes, as long as it does not send symptoms further down the leg. Regular, gentle walking helps keep the nerve moving, reduces stiffness, and keeps you out of long sitting, which is one of the biggest aggravators I see. If walking draws the leg pain back toward the spine or eases it, that is a positive sign. If it reliably worsens leg symptoms, I adjust distance, pace, or posture.

Long periods of sitting, slumped driving and deep forward bending aggravate many people's sciatica, while standing or walking aggravates others. Coughing, sneezing and straining can spike it too. The response depends on what is irritating the nerve: disc-related sciatica is often worse with sitting and bending, while narrowing around the nerve's exit is more often brought on by standing and arching back. I use the positions that ease your symptoms and gradually rebuild your tolerance for the others. Pain in one position does not by itself mean the nerve is being squeezed more.

Go to emergency now for new trouble starting to pass urine or feeling it pass, new loss of bladder or bowel control, new numbness between the legs or around the back passage, or severe or rapidly worsening weakness in both legs. New loss of genital sensation or sexual function with back or leg pain also needs emergency assessment. These can be signs of cauda equina syndrome. Contact a medical clinician today if pain suddenly starts down both legs or spreads from one leg to both, even without those signs. A new foot drop (the foot catches or slaps when you walk) or worsening weakness in one leg needs a same-day medical assessment. Sudden unexplained weakness or numbness in an arm or leg, even if it improves, can be a stroke: call 911 now. Severe, unrelenting night pain, unexplained weight loss or a history of cancer need a medical review before physiotherapy, and fever with back pain needs one the same day.

No. A herniated disc is the most common cause, but sciatic-type pain can also come from narrowing of the opening where the nerve leaves the spine (foraminal stenosis), the deep buttock muscles such as piriformis, sacroiliac joint irritation, or pain referred from the hip. Sorting out which structure is actually driving symptoms matters, because the plan changes significantly depending on the source.

Surgery is rarely the first step, and many people improve without it. For selected people with persistent, disabling disc-related leg pain, surgery can give faster relief. The SPORT trial (Weinstein and colleagues, JAMA 2006) found substantial improvement with both surgery and non-surgical care, but so many people switched groups that its randomised comparison is hard to interpret, and analyses based on the treatment people actually received favoured surgery, including at eight years (Lurie and colleagues, Spine 2014). Surgery is considered when there is worsening nerve weakness or cauda equina syndrome, or when leg pain stays severe and disabling after 6 to 12 weeks of appropriate treatment. The decision depends on your symptoms, nerve function, scan findings and preferences.