Sciatica has a fearsome reputation, and if you have ever had that sharp, burning pain shooting down the back of your leg you will understand why. The good news, and it is genuinely good news, is that most sciatica settles with time and the right approach, and the large majority of people recover well without ever needing surgery. Here is what is actually going on, and how physiotherapy helps.
What sciatica actually is
Sciatica is not really a diagnosis in itself. It is a description of a symptom: pain that travels along the path of the sciatic nerve, from the lower back or buttock down the leg. It happens when one of the nerve roots in the lower back becomes irritated or compressed. The pain you feel in your leg is that irritated nerve reporting back, even though the source of the problem sits higher up in the spine.
What causes it
The most common cause is a disc-related problem, where the soft material of a spinal disc bulges or herniates and irritates a nearby nerve root. In older adults, a narrowing of the spaces the nerves pass through, known as spinal stenosis, is a frequent cause. Less commonly, tightness or irritation around the buttock can contribute. Working out which of these is driving your symptoms is a big part of the assessment, because it shapes the plan.
The symptoms to recognise
Sciatica has a fairly distinctive pattern. The leg pain is often worse than the back pain, and it tends to follow a line down the leg rather than being vague and spread out. Alongside the pain, people frequently notice pins and needles, numbness, or a feeling of weakness in the leg or foot. Symptoms often flare with certain positions, such as prolonged sitting or bending, and ease with others.
The good news about recovery
This is the part worth holding on to when you are in the thick of it. The natural course of most sciatica is improvement. A large proportion settles within a few weeks, and the majority within around six to twelve weeks. Even the more stubborn cases usually recover well over time, and only a small minority ever need a surgical opinion. Understanding that recovery is the norm, not the exception, genuinely helps, because fear and catastrophising tend to make nerve pain worse.
How physiotherapy helps
Physiotherapy will not force a nerve to heal on command, but it is a well-evidenced way to support the recovery that your body wants to make. Treatment usually involves a few strands working together. First, a thorough assessment to confirm it is sciatica, identify the likely source, and screen for anything that needs onward referral. Then, hands-on treatment and specific movement and nerve-mobilising exercises to settle the irritation and restore comfortable movement.
The most important message, and the one the evidence is clearest on, is to keep moving. Prolonged rest makes sciatica worse. Staying gently active within your limits, guided by someone who can tell you what is safe, speeds recovery. Over time the plan builds strength through the hips, core, and trunk so the area is more resilient and the problem is less likely to return. Just as valuable is clear education, so you understand what is happening and stop fearing movement.
Red flags: when to seek urgent care
Sciatica is very rarely dangerous, but there is one situation that is a genuine emergency and everyone should know it. Go to A&E the same day if you develop any of the following, which can indicate a rare condition called cauda equina syndrome:
- Loss of control of your bladder or bowels.
- Numbness or altered sensation around the saddle area (the groin, buttocks, and inner thighs).
- Weakness or numbness developing in both legs.
- Rapidly worsening weakness in a leg or foot.
These are uncommon, and the point of listing them is not to worry you but to make sure that, in the rare event they appear, you act quickly rather than booking a physio appointment for the following week.
When are scans or surgery needed?
For most people, neither. Scans are usually only helpful if symptoms are severe, not improving as expected, or if a surgical decision is being considered, because disc bulges show up on the scans of plenty of pain-free people too. Surgery is reserved for the minority whose symptoms are severe, persistent, and not responding to good conservative care, or who have significant nerve compression. If you reach that point, your physiotherapist will guide you towards the right specialist opinion.
If you are dealing with sciatica in Manchester and want a clear diagnosis and a plan to get moving again, book an appointment and we will take it from there.