Sciatica can be frustrating because it often feels like it appears out of nowhere, improves for a while, then suddenly comes back again. For some people, it starts as a dull ache in the lower back. For others, it feels like a sharp, burning or shooting pain that travels through the buttock, down the back of the leg and sometimes into the calf or foot.
The reason sciatica can be so persistent is that it is not always caused by one single thing. It is usually linked to irritation or compression of the sciatic nerve, but the reason that nerve becomes irritated can vary from person to person. For some, the problem may be linked to a disc issue in the lower back. For others, it may be made worse by muscle tightness, poor posture, long hours of sitting, limited hip mobility or repeated strain through the lower back and pelvis.
What Is Sciatica?
Sciatica is a term used to describe pain linked to the sciatic nerve. The sciatic nerve is the longest nerve in the body. It runs from the lower back, through the hips and buttocks, and down each leg.
When this nerve becomes irritated, compressed or inflamed, it can cause symptoms such as lower back pain, buttock pain, pain travelling down one leg, tingling, pins and needles, numbness, muscle weakness and tightness through the hips, glutes or hamstrings.
Sciatica usually affects one side of the body, although some people can experience symptoms on both sides. If symptoms are severe, worsening, affecting both legs, or linked to bladder, bowel or saddle-area numbness, urgent medical advice is needed.
Common Causes of Sciatica
Sciatica can be triggered by anything that places pressure on or irritates the sciatic nerve. One of the most well-known causes is a bulging or herniated disc. The discs in your spine act like cushions between the bones of the spine. If a disc bulges or presses on a nearby nerve, it can trigger sciatic pain.
This type of sciatica may feel sharp, electric or intense. It can also be aggravated by coughing, sneezing, bending or sitting for long periods.
Tight Glutes and Hip Muscles
Tight muscles around the hips and buttocks can also contribute to sciatic discomfort. When the muscles around the pelvis become tight, they can affect how the lower back, hips and legs move together.
The glutes, piriformis, hip flexors and hamstrings all play a role in lower body movement. If these areas become restricted, they can increase tension through the pelvis and lower back. That tension can make sciatic symptoms feel worse, especially when sitting, walking, training or driving.
If your symptoms keep returning and tightness around your hips, glutes or lower back is making things worse, professional sciatica treatment in Glasgow may help you move more comfortably.
Sitting for Long Periods
Long hours of sitting can be a major factor in recurring sciatica. Sitting places pressure through the lower back, hips and glutes. It can also cause the hip flexors to become short and tight, while the glutes become less active.
This can create a pattern where the lower back takes on more strain than it should. Over time, that can contribute to stiffness, irritation and flare-ups.
People who work at a desk, drive for long periods or spend a lot of time sitting in the evening may notice that their symptoms are worse after being still for too long.
Poor Posture and Movement Habits
Posture does not need to be perfect all day. The bigger issue is often staying in one position for too long.
If you regularly sit with your lower back rounded, shoulders hunched and hips tucked under, your spine and pelvis may become stiff. When you then stand up, walk, lift or train, your body may not move as freely as it should.
Poor movement habits can also add to the problem. Bending from the lower back instead of the hips, lifting with poor control or twisting awkwardly can all increase strain through the lower back.
Why Does Sciatica Keep Coming Back?
Sciatica often comes back because the underlying cause has not been addressed.
Pain relief may calm the symptoms temporarily, but if the same movement habits, tight muscles or postural patterns remain, the irritation can return. This is why many people feel better for a few weeks, then experience another flare-up after sitting too long, lifting something awkwardly, training hard or sleeping in a poor position.
Recurring sciatica is often linked to a combination of factors, including not moving enough, moving poorly, sitting too much, tight hips and glutes, weak supporting muscles, lower back stiffness, returning to activity too quickly and ignoring early warning signs.
Can Stretching Help Sciatica?
Stretching can help some people with sciatic symptoms, especially when tight muscles are contributing to the problem. The key is choosing the right type of stretching and not forcing painful movements.
Aggressive stretching can sometimes make nerve pain worse. This is because nerves do not respond well to being pulled or irritated. A careful, guided approach is usually better than pushing into pain.
Assisted stretching can be helpful because it allows the body to move through controlled ranges while targeting areas that may be contributing to tension, such as the hip flexors, hamstrings, glutes and lower back.
Final Thoughts
Sciatica can be caused by disc problems, nerve irritation, muscle tightness, poor posture, long sitting or movement imbalances. In many cases, it is not just one issue. It is a combination of factors that build up over time.
If symptoms keep returning, the key is to look beyond short-term relief. By improving mobility, reducing tension and supporting better movement, you may be able to reduce flare-ups and feel more confident in everyday activities.