Sciatica: symptoms, duration and exercises for relief

What exactly is sciatica?

Sciatica is not a disease. It is a symptom. It describes pain that follows the path of the sciatic nerve, the longest and thickest nerve in the human body. This nerve originates in the lower back at vertebrae L4, L5, and S1, crosses through the buttock, runs down the back of the thigh, then splits at the knee into two branches that continue to the foot.

When this nerve is compressed, irritated, or inflamed at its root, pain can spread along all or part of this path. You might feel it in the buttock, the back of the thigh, the calf, the ankle, or the foot. Sometimes in just one segment. Sometimes along the entire length.

This guide helps you recognize true sciatica, understand what is happening in your back, estimate recovery time, and practice appropriate exercises to speed up healing.

How to recognize sciatica

Sciatica has a characteristic pain profile. It does not resemble a simple backache. Here is what sets it apart:

The pain is one-sided in the vast majority of cases. It affects a single leg. If both legs are involved simultaneously, seek medical attention promptly as this may indicate broader compression.

The pain path is downward. It starts from the lower back or buttock and travels toward the foot. Leg pain is often worse than back pain. This is an important point: many patients come in for leg pain without realizing the origin is in the lumbar spine.

The quality of the pain is distinctive. Patients describe burning, electric shocks, prickling, pins and needles, or numbness. This is not a dull muscular ache. It is nerve pain, sharp and shooting.

Certain positions worsen it: prolonged sitting, trunk flexion (bending forward), coughing, sneezing, straining. Others relieve it: short walks, lying with knees bent, gentle back extension.

Neurological symptoms may accompany the pain: decreased sensation in a specific area of the foot or leg, muscle weakness (difficulty lifting the foot, walking on tiptoes, or walking on heels), loss of a tendon reflex.

Causes of sciatica

The most common cause is a herniated disc. The intervertebral disc between L4-L5 or L5-S1 bulges backward and compresses the nerve root. This accounts for about 85% of sciatica cases in adults under 50.

Lumbar spinal stenosis is the second cause, more common after 60. Narrowing of the spinal canal through osteoarthritis, ligament thickening, or spondylolisthesis can compress nerve roots and produce sciatica, often bilateral and worsened by walking.

Piriformis syndrome is a less common but often overlooked cause. The piriformis muscle, deep in the buttock, can compress the sciatic nerve that passes just below (or sometimes through) this muscle. The pain mimics classic sciatica, but the origin is in the buttock rather than the back. Prolonged sitting and internal hip rotation aggravate symptoms.

Other, rarer causes include tumors, infections, vertebral fractures, and hematomas. These are considered when the clinical picture is atypical or does not respond to standard treatment.

How long does sciatica last?

The answer depends on the cause and severity. But research data provides useful benchmarks:

Most sciatica from herniated discs improves significantly within 6 to 12 weeks. The body naturally reabsorbs part of the herniated disc material. This is a well-documented process: the initial inflammation attracts immune cells that gradually break down the herniation. The largest herniations are paradoxically the ones that resorb best.

At 3 months, roughly 75% of patients are markedly improved. At 6 months, that number rises to 85-90%. Only a minority of patients require surgical intervention.

Recovery is not linear. You will have good days and bad days. Pain may flare temporarily after exertion or holding a position too long. This is normal. What matters is the overall trend over several weeks.

A sign of good progress is pain centralization: pain that was in the foot moves up to the calf, then the thigh, then the buttock, before disappearing. This upward migration is an excellent indicator of healing.

First steps to take

In the acute phase (the first days), pain can be intense. Here is what helps:

Find your comfort position. For many, it is lying on the back with knees bent, feet flat. For others, it is on the side with a pillow between the knees. Some are better lying face down. There is no universal position. Use whichever decreases your pain.

Avoid prolonged bed rest. Stay lying down if the pain is very severe, but try to get up and walk for a few minutes every hour. Short walks are one of the best early remedies for sciatica.

Apply ice or heat. Ice on the lumbar area for 15 to 20 minutes helps reduce inflammation. Heat on the gluteal and lumbar muscles helps release muscle spasm. Alternate based on what gives you relief.

If your doctor has prescribed anti-inflammatories or painkillers, take them regularly during the first days rather than only when pain becomes unbearable. The goal is to break the pain cycle so you can move.

Exercises for sciatica relief

The following exercises are organized by recovery phase. Start with phase 1 and progress as pain decreases. If an exercise increases leg pain, stop it and move to the next one.

Phase 1: Relief (days 1 to 14)

Pelvic tilts: lying on your back, knees bent. Gently flatten your lower back against the floor by engaging the abdominals, then release. This micro-mobilizes the spine without stress. Do 15 repetitions, 3 times per day.

Single knee-to-chest: lying on your back, bring one knee toward your chest with both hands. Hold 20 seconds. Return the foot to the floor. Alternate. Do 5 repetitions on each side. This exercise opens the space where the nerve root is compressed.

Gentle prone extension (McKenzie method): lying face down, prop yourself up on your elbows. Let the pelvis relax toward the floor. Hold 30 seconds if leg pain does not worsen. If the pain centralizes (moves back toward the spine), that is a good sign. Do 10 repetitions, several times per day.

Piriformis stretch: lying on your back, cross the ankle of the painful side over the opposite knee. Pull the opposite knee toward your chest. You should feel a deep stretch in the buttock. Hold 30 seconds. Do 3 repetitions.

Phase 2: Mobilization (weeks 2 to 6)

Full prone extension (modified cobra): lying face down, push up on your hands to lift the trunk while keeping the pelvis on the floor. Arms do not need to be fully straight at first. Progress toward full extension over several sessions. Do 10 repetitions, 3 times per day.

Sciatic nerve glide: seated on the edge of a chair, straighten the painful leg in front of you while lifting the toes. Simultaneously, nod the head forward. Then bend the knee and lift the head. This movement slides the nerve within its sheath without tensioning it. Do 15 gentle repetitions, 2 times per day.

Cat-cow: on all fours, alternate between a rounded back (cat) and an arched back (cow). Move slowly and within a comfortable range. Do 15 repetitions.

Progressive walking: increase walk duration by 5 minutes every 3 to 4 days. Aim for 30 minutes of continuous walking by the end of this phase.

Phase 3: Strengthening (weeks 6 to 12)

Glute bridge: lying on your back, feet flat, push hips toward the ceiling. Hold 5 seconds at the top. Do 15 repetitions for 3 sets. Progression: single-leg bridge.

Bird-dog: on all fours, simultaneously extend the right arm and left leg. Hold 5 seconds. Alternate. Do 10 repetitions per side for 3 sets. This exercise strengthens the deep spinal stabilizers.

Front plank: supported on forearms and toes, keep the body in a straight line. Start with 20 seconds and gradually increase to 60 seconds. Do 3 sets.

Progressive squat: start with a partial squat (quarter squat) and increase depth over weeks. Keep the back straight and knees aligned over the feet. Do 12 repetitions for 3 sets.

Dead bug: lying on your back, arms extended toward the ceiling, knees at 90 degrees. Simultaneously lower one arm overhead and the opposite leg toward the floor, without letting the lower back leave the floor. Alternate. Do 10 repetitions per side for 3 sets.

What makes sciatica worse: traps to avoid

Prolonged sitting is enemy number one. It increases intradiscal pressure by 40% compared to standing. If your work is sedentary, stand up every 30 minutes. Set a timer. Walk for 2 to 3 minutes before sitting back down.

Repeated trunk flexion (picking objects off the floor, making the bed, tying shoes) is risky in the acute phase. Bend your knees instead of your back. Drop to one knee if needed.

Heavy lifting increases disc compression. Avoid lifting loads over 5 kilograms during the first weeks. When you resume lifting, keep the object close to your body and use your legs.

Aggressive sciatic nerve stretching (straight leg raised toward the ceiling while lying down) can worsen nerve irritation in the acute phase. Prefer gentle neural glides over forced stretches.

When to consider surgery

Surgery is indicated in two situations:

As an emergency: if you lose bladder or bowel control, if you develop perineal numbness, or if you have rapidly progressive weakness in the foot (foot drop). These signs indicate cauda equina syndrome, which requires intervention within 24 to 48 hours.

As a non-emergency: if pain remains severe and disabling despite 6 to 12 weeks of well-conducted conservative treatment (physiotherapy, medication, exercises). Microdiscectomy is the most common procedure. It provides rapid leg pain relief in 85 to 90% of operated patients.

The decision to have surgery is not a failure. It is an additional tool when conservative treatment reaches its limits. But it is not without risks, and post-operative rehabilitation remains necessary for a lasting result.

Preventing recurrence

Once sciatica has resolved, the risk of recurrence exists. About 30% of patients will experience another episode within two years. Prevention rests on three pillars.

Trunk strengthening. The deep muscles (multifidus, transversus abdominis) are the spine's stabilizers. When they are strong and reactive, they protect the discs from excessive stress. Planks, bird-dogs, and dead bugs are foundational exercises to maintain over the long term.

Mobility. Stiff hips shift stress onto the lumbar spine. Tight hamstrings limit hip flexion and force the back to compensate. A regular stretching program for the hips, hamstrings, and piriformis reduces the risk of lumbar overload.

Postural habits. Learn to lift loads correctly. Adjust your workstation. Alternate positions. These habits are not spectacular, but they make a difference over months and years.

Key takeaways

Sciatica is pain along the sciatic nerve, most often caused by a herniated disc. It is recognized by descending leg pain, often accompanied by burning, tingling, or numbness. The vast majority of cases resolve in 6 to 12 weeks with movement, targeted exercises, and patience. Watch for red flags (loss of bladder control, progressive weakness). Progress through the three exercise phases while respecting your pain levels. A structured program like Pango can guide you through this progression, adapting each phase to your pain level and capabilities.