# Sciatica Diagnosis and Treatment in Barcelona > Medical guide on the diagnosis and treatment of sciatica in Barcelona: causes, symptoms, diagnostic tests, conservative treatment and minimally invasive surgery. Reviewed by Dr. Jhon A. Hoyos. Care for national and international patients with remote second opinion. URL: https://brainandspine-bcn.com/en/sciatica-treatment-barcelona/ Fuente: Brain & Spine Barcelona — https://brainandspine-bcn.com --- # Sciatica diagnosis and treatment in Barcelona Sciatica is one of the most common reasons for consultation due to back and leg pain. An accurate diagnosis allows, in the vast majority of cases, pain management without surgery, reserving minimally invasive surgical techniques for patients who truly need them. Lumbar spine Published 22/06/2026 Reviewed by Dr. Jhon A. Hoyos **Sciatica** (or sciatica pain) is pain that radiates along the course of the **sciatic nerve**, the longest and thickest nerve in the body, which extends from the lower lumbar region and pelvis, through the buttock, to the back of the thigh and leg. It is not a disease in itself, but a symptom that the nerve is irritated or compressed at some point along its path. ## What is sciatica? The term sciatica describes a pain that originates in the lumbar or gluteal region and radiates down the leg following the course of the sciatic nerve. It usually affects only one side of the body and may be accompanied by tingling, numbness or loss of strength. The most common cause is compression of a lumbar nerve root, often by a [lumbar disc herniation](https://brainandspine-bcn.com/en/spine-surgery/lumbar-spine/), although there are other origins that are important to distinguish. Understanding the precise origin of the pain is the key to treatment: two patients with the same symptom may need very different approaches depending on the underlying cause. ## Causes and risk factors Sciatica occurs when something compresses or irritates the sciatic nerve or the lumbar nerve roots that form it. The most frequent causes are: - **Lumbar disc herniation:** intervertebral disc material shifts and presses on the nerve root. It is the most common cause, especially between the ages of 30 and 50. - **Lumbar canal stenosis:** narrowing of the canal through which the nerves pass, typical in older people. - **Spondylolisthesis:** displacement of one vertebra over another that may pinch the nerve. - **Facet arthrosis with osteophytes:** the growth of bony spurs reduces the nerve exit space. - **Piriformis syndrome:** the piriformis muscle in the buttock compresses the nerve along its course. Among the key **risk factors** are age, obesity, a sedentary lifestyle, diabetes, occupations requiring repetitive lifting or twisting of the back, long hours of driving and sustained postures held for extended periods. ## Symptoms of sciatica The main symptom is pain radiating from the lumbar region or buttock down the leg. Typical features include: - Pain extending down the back of the thigh and calf, usually in one leg only. - A burning, cramping or "electric shock" sensation rather than a dull ache. - Worsening when sitting for long periods, or when coughing, sneezing or straining. - Tingling or numbness along the nerve's course. - Weakness or loss of strength in the leg or foot in more severe cases. **Red flags:** loss of bladder or bowel control, numbness in the genital or perianal area ("saddle anaesthesia") or rapidly progressive weakness are emergencies requiring immediate attention, as they may indicate cauda equina syndrome. ## Diagnosis of sciatica Diagnosis begins with a **detailed clinical history** and a rigorous **physical examination**: neural tension tests (such as the straight leg raise), assessment of muscle strength, reflexes and sensation. This examination identifies which nerve root is affected. When pain is intense, persistent or accompanied by neurological deficit, **imaging tests** are requested. **MRI** is the test of choice, showing discs, nerves and soft tissues in detail. In selected cases it is supplemented by CT (better for bone) or electromyography to study nerve function. The [Brain & Spine Barcelona spine surgery team](https://brainandspine-bcn.com/en/spine-surgery/) integrates these findings with clinical data to avoid treating images rather than patients. ## Conservative treatment The good news is that **most cases of sciatica improve without surgery**. Conservative treatment is always the first step and includes: - **Pain management:** analgesics, anti-inflammatory drugs and, in some cases, muscle relaxants or neuromodulators prescribed by the doctor. - **Controlled activity:** avoiding complete rest and maintaining light, tolerable movement, as prolonged inactivity worsens the prognosis. - **Physiotherapy:** lumbar stabilisation exercises, stretching and postural re-education. - **Local cold and heat** in the early stages to relieve inflammation and muscle spasm. - **Image-guided epidural injections** in selected cases that do not respond to the above measures. With these measures, a large proportion of patients experience significant improvement within 4 to 6 weeks. ## Minimally invasive surgical treatment When pain does not respond to adequate conservative treatment, or when neurological deficit is present, surgery can provide rapid and lasting relief. Current techniques are **minimally invasive**: through millimetre-sized incisions, the compressed nerve root is released with minimal damage to healthy tissue. [Endoscopic spine surgery](https://brainandspine-bcn.com/en/treatments/endoscopy/) allows operating through a single portal of a few millimetres, with high-definition vision, less bleeding, less postoperative pain and faster recovery than traditional open surgery. Depending on the cause, the procedure may consist of a microdiscectomy, decompression or widening of the affected canal. ## When to operate for sciatica? Surgery is not the first option but an individually tailored decision. It is typically considered when: - Disabling pain persists despite 6-12 weeks of well-conducted conservative treatment. - Progressive muscle weakness in the leg or foot is present. - There are red-flag signs (cauda equina syndrome), which constitute a surgical emergency. - The patient's quality of life is severely affected and imaging confirms a treatable compression. Assessment by a [team of spine-specialised neurosurgeons](https://brainandspine-bcn.com/en/team/) is essential to indicate surgery only when the benefits clearly outweigh the risks. ## Recovery and prevention of recurrence After minimally invasive surgery, many patients notice relief of leg pain almost immediately and resume normal activity within a few weeks, following a progressive rehabilitation programme. To prevent further episodes it is key to maintain a healthy weight, strengthen the trunk muscles, take care of posture, avoid a sedentary lifestyle and learn to lift safely. At Brain & Spine Barcelona we assess each case of sciatica at **Hospital El Pilar (Balmes 271, Barcelona)** with a stepped approach: we always prioritise conservative treatment and reserve surgery for patients who genuinely need it. ## Frequently asked questions about sciatica How long does sciatica take to heal? Most acute episodes of sciatica improve noticeably within 4 to 6 weeks with conservative treatment. When pain persists beyond 6 to 12 weeks, or is accompanied by loss of strength, specialist assessment is advisable to rule out nerve compression requiring a different approach. Is sciatica always caused by a disc herniation? No. Although lumbar disc herniation is the most common cause, sciatica can also result from lumbar canal stenosis, spondylolisthesis, facet arthrosis with osteophytes, or, less frequently, piriformis syndrome. Precise diagnosis determines the treatment. When should I go to A&E for sciatica? You should go immediately if you experience loss of bladder or bowel control, numbness in the genital or perianal area (saddle anaesthesia), or rapidly progressive leg weakness. These may be signs of cauda equina syndrome, a surgical emergency. Is complete bed rest recommended for sciatica? No. Prolonged bed rest worsens the prognosis. Light, tolerable activity is advised, avoiding efforts that trigger pain, as controlled movement promotes recovery. What tests are used to diagnose sciatica? The basis is physical examination with neural tension tests and assessment of strength, reflexes and sensation. MRI is the imaging test of choice; in selected cases it is supplemented by CT or electromyography. Does sciatica surgery leave lasting effects? Current minimally invasive and endoscopic techniques are performed through millimetre-sized incisions, with minimal tissue damage, rapid recovery and a low complication rate. Most patients resume normal activity within a few weeks. Can I prevent sciatica from recurring? Yes, to a large extent. Maintaining a healthy weight, strengthening the lumbar and abdominal muscles, taking care of posture, avoiding a sedentary lifestyle and learning correct lifting techniques significantly reduce the risk of recurrence. Where can sciatica be treated in Barcelona? The Brain & Spine Barcelona team assesses and treats sciatica at Hospital El Pilar (Balmes 271, Barcelona), with a stepped approach that prioritises conservative treatment and reserves minimally invasive surgery for cases that truly require it.