1. What are the common symptoms of sciatica?

Sciatica symptoms vary widely in severity. The most typical symptom is pain or numbness that starts in the lower back, travels along the nerve pathway, and spreads to the buttocks, thighs, calves, and even the feet.

• Mild symptoms: These may include intermittent tingling, numbness, or a burning sensation in the lower back, buttocks, or lower limbs. The pain may extend along the back or outer side of the leg to the foot, but it does not seriously affect daily activities. Patients may feel tightness or tingling in the leg, especially after prolonged sitting or standing. Symptoms may come and go, and may ease after rest.

• Moderate symptoms: These present as more noticeable and persistent pain and numbness, with reduced mobility. Patients may be unable to stand or sit for long periods, and pain worsens when bending over or lifting heavy objects. The pain may feel like a mild electric shock and extend to the thigh, calf, or sole of the foot. Crossing the legs may worsen numbness or pain, further limiting movement.

• Severe symptoms: These include intense pain, leg weakness, or muscle atrophy. In some cases, bowel or bladder incontinence or reduced sensation in the feet may occur, seriously affecting walking and activity.

Patients with sciatica may be unable to perform even simple leg-raising movements, and the pain may feel like a severe electric shock. Actions that increase abdominal pressure, such as coughing or sneezing, may also worsen the pain. If lower back pain does not improve, seek medical attention as soon as possible.

2. What causes sciatica?

Sciatica is mainly caused by compression of the nerve roots that make up the sciatic nerve, especially the fourth and fifth lumbar nerve roots or the first sacral nerve root. The most common cause is a herniated disc. When the herniated disc presses on the nerve root, it triggers an inflammatory response, leading to acute or chronic sciatica. Other possible causes include:

• Spinal degeneration: Lumbar fractures after bone loss, degenerative lumbar arthritis, spinal stenosis, and similar conditions may all lead to narrowing of the neural foramen, thereby compressing the nerve root.

• Lumbar spondylolisthesis: This causes compression of the nerve root and leads to pain.

• Tumors, fractures, and spinal infections: Conditions such as tumors of the spine or spinal cord, and spinal tuberculosis, may also be triggers.

• Deep gluteal syndrome: Tightness or inflammation of the deep buttock muscles compresses the sciatic nerve.

• Muscle tightness or poor posture: These may also cause nerve compression or irritation.

• Lifestyle habits: Prolonged sitting, obesity, poor posture over time, being overweight, lack of exercise leading to weak core muscles, smoking, high blood pressure/high blood sugar/high cholesterol, prolonged standing, or excessive use of the lower back can all increase the risk.

• Heavy labor: Long-term heavy physical work or repeatedly lifting heavy objects increases pressure on the lumbar spine, causing strain and potentially triggering a herniated disc or nerve compression.

• Pregnancy: Fetal growth may compress the nerves.

• Exercise training: Overly intense training, lack of proper form, weak core muscles, or excessive back arching may also damage the intervertebral disc.

It is worth noting that sciatica in younger people is often caused by an acute posterior disc herniation, with a more sudden and severe onset of pain. In older adults, degenerative changes such as disc degeneration or lumbar spinal stenosis are more common, and the course tends to be slower.

3. What treatments are available for sciatica?

Treatment options for sciatica are diverse, and doctors usually begin with conservative, non-invasive treatment. Clinical experience shows that about 80% to 90% of patients experience significant improvement after 6 to 8 weeks of non-invasive treatment.

Conservative treatment mainly includes:

• Lifestyle adjustments: During the acute phase, avoid excessive activity to reduce the burden on the spine. Avoid large movements such as bending deeply or lifting heavy objects. Maintain proper standing, sitting, and sleeping posture. If even slight movements cause pain, a back brace may be used short term for support. Adjust office chairs to avoid staying in the same position for long periods. Get up regularly to move and stretch. Use proper lifting and turning techniques.

• Medication: Nonsteroidal anti-inflammatory drugs (NSAIDs), muscle relaxants, and neuromodulating medications (such as tricyclic antidepressants or antiepileptic drugs) can relieve symptoms. For more severe symptoms, short-term oral or local steroid injections may be considered. Long-term reliance on medication is not recommended for chronic pain.

• Rehabilitation therapy: Under the guidance of a professional physical therapist, patients learn and perform exercises to strengthen the core and improve flexibility. These include heat therapy, electrotherapy, exercise therapy, and posture education. Trunk stretching exercises and back massage help relax the muscles. Lumbar traction can reduce pressure on the intervertebral disc. PEMF electromagnetic pulse therapy devices can stimulate deep muscle nerves.

If conservative treatment is ineffective or severe nerve damage occurs, surgery may need to be considered. For example, if lower-limb weakness, sensory abnormalities, muscle atrophy, or bowel and bladder incontinence persist, or imaging shows obvious nerve compression, decompression surgery should be evaluated. There is also precise minimally invasive water-cooled neuromodulation surgery, which offers advantages such as smaller wounds and faster recovery.

In addition, regenerative therapy has become an increasingly important option in recent years. This type of therapy uses injections of high-concentration glucose or autologous platelet-derived growth factor (PRP) to stimulate the body’s repair mechanisms, promote tissue regeneration, stabilize the lumbar spine, and relieve pain. Regenerative therapy is usually considered when conservative treatment fails and surgery is not suitable. It can directly target damaged tissues, reduce inflammation and compression, and lower the risk of recurrence. For patients with severe nerve compression who cannot undergo surgery immediately, image-guided precise nerve block treatment may be considered to quickly reduce pain.

4. What exercises are suitable for patients with sciatica?

Exercise plays an important role in managing sciatica and preventing recurrence. A professional physical therapist will guide patients through a series of exercises to strengthen the core and improve flexibility. Suitable exercises include:

• Core strengthening exercises such as bridges and dead bugs.

• Moderate aerobic exercise, such as walking or swimming.

• Yoga

• Pilates

These exercises help improve spinal stability, correct muscle imbalances, and strengthen lumbar stability, thereby reducing the risk of recurrence. It is important to stay moderately active and avoid prolonged sitting.

5. How can the pain of sciatica be relieved?

Ways to relieve sciatica pain include several aspects:

• Rest: During an acute pain episode, rest should be the priority. After resting, mild symptoms may improve.

• Posture adjustment: Maintaining proper sleeping, sitting, and standing posture is very important. Use an ergonomic sitting posture and choose a chair with good lumbar support. Avoid staying in the same position for long periods; get up regularly to move or stretch. Crossing your legs may worsen numbness or pain and should be avoided.

• Avoid specific movements: Try to avoid or carefully perform movements that increase spinal stress, such as bending deeply or lifting heavy objects. Actions that increase abdominal pressure, such as coughing or sneezing, can worsen pain and should be noted.

• Medication: Anti-inflammatory pain relievers, muscle relaxants, neuromodulating medications, or short-term steroids can help quickly relieve discomfort.

• Physical therapy/rehabilitation: Rehabilitation treatments such as heat therapy, electrotherapy, back massage, and lumbar traction help relieve pain and relax muscles. Exercise therapy can improve stability and symptoms.

• Adjunctive therapy: After professional evaluation, acupuncture may be considered to relieve symptoms.

• Regenerative therapy: High-concentration glucose or PRP injections can promote tissue repair, stabilize the lumbar spine, reduce nerve compression and inflammation, and thereby relieve pain.

• Nerve block: Image-guided precise nerve block treatment can quickly reduce severe pain.

6. What stretching exercises can patients with sciatica do?

Stretching is part of sciatica rehabilitation treatment. A professional physical therapist will guide patients through flexibility training. Stretching or similar exercises that can be performed include:

• Cat-cow stretch (Cat-cowstretch)

• Trunk stretching exercises

• Yoga also includes many stretching movements.

These stretching exercises help relax the muscles, improve muscle balance, and may reduce pressure on the lumbar spine.

7. What medications are used to treat sciatica?

The main purpose of medication for sciatica is to relieve inflammation and pain symptoms. Commonly used medications include:

• Nonsteroidal anti-inflammatory drugs (NSAIDs): Effective in relieving inflammation and pain.

• Muscle relaxants: Help quickly relieve discomfort caused by muscle tightness.

• Neuromodulating medications: For symptoms of neuropathic pain such as obvious soreness, numbness, and tingling, tricyclic antidepressants or antiepileptic drugs may be used.

• Steroids: For patients with more severe symptoms, doctors may sometimes recommend short-term oral or local steroid injections to further reduce irritation of the nerve root.

Please note that long-term reliance on medication is not recommended for chronic pain, to avoid side effects.

8. What does physical therapy for sciatica include?

Physical therapy plays an important role in managing sciatica and is usually referred to as rehabilitation therapy. Physical therapists guide patients through exercises and the use of specific devices. Physical therapy may include:

• Exercise therapy: Learning and performing exercises to strengthen the core and improve flexibility. Examples include bridges, cat-cow stretch, and trunk stretching exercises. Moderate aerobic exercise such as walking or swimming is also part of it.

• Posture education: Teaching patients proper standing, sitting, and sleeping posture, as well as correct techniques for daily activities such as lifting and turning.

• Heat therapy

• Electrotherapy

• Back massage

• Lumbar traction: Can reduce pressure on the intervertebral disc and enlarge the neural foramen.

• PEMF electromagnetic pulse therapy device: Can stimulate deep muscle nerves and reactivate core muscle function.

Physical therapy helps improve spinal stability, correct muscle imbalances, reduce pressure on the lumbar spine, speed recovery, and lower the risk of recurrence.

9. Which department should I see for sciatica?

If you feel pain extending from the waist to the soles of the feet and it lasts for more than a week, accompanied by muscle weakness, loss of sensation, or bowel and bladder incontinence, seek medical attention as soon as possible. Orthopedics or rehabilitation medicine are both options. If you have long-term chronic pain, you may also seek help from a pain management specialist.

10. Does sciatica require surgery?

Sciatica does not always require surgery. In most cases, doctors will first use more conservative treatments such as lifestyle adjustments, medication, and rehabilitation therapy. Clinical experience shows that about 80% to 90% of sciatica patients can achieve significant improvement after 6 to 8 weeks of non-invasive treatment.

However, if conservative treatment fails, pain does not improve or even worsens, or severe nerve damage occurs, such as persistent lower-limb weakness, sensory abnormalities, muscle atrophy, especially bowel and bladder incontinence, or imaging shows obvious nerve compression from a herniated disc or spinal stenosis, surgical treatment should be actively considered. Decompression surgery may be evaluated to relieve nerve compression and avoid irreversible nerve damage.

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Surgical methods include decompression surgery, discectomy, and precise minimally invasive water-cooled neuromodulation surgery, which has advantages such as small wounds, fast recovery, and no need for hospitalization. This technology combines synchronous medical imaging guidance to precisely locate and treat the lesion. In addition, for patients with severe nerve compression who cannot receive decompression surgery immediately, image-guided precise nerve block treatment may be considered to quickly relieve pain and restore quality of life.