A pinched nerve in the lower back occurs when excessive pressure is applied to the nerve, resulting in pain, numbness, or weakness. Also known as radicular back pain, this condition is usually caused by compression, inflammation or injury to a spinal nerve root.
A herniated disc, spinal stenosis, and degenerative disc disease can all contribute to nerve entrapment. These conditions can also lead to shooting pains, muscle weakness, and difficulty standing.
A pinched nerve in the lower back, often caused by a herniated or slipped disc or other condition mentioned earlier, can lead to a variety of symptoms that can significantly affect daily life. These symptoms may include:
- Sharp or shooting pain in the lower back
- Pain that radiates down the buttocks, thighs, or legs
- Numbness or tingling along the path of the affected nerve (usually down the leg)
- Muscle weakness in the legs or feet
- Difficulty standing or walking for long periods of time
- Worsening of pain with certain movements or positions, such as bending or sitting
- Decreased range of motion in the lower back or legs
- Worsening of pain at night or with prolonged rest
- Worsening pain with activity that improves with rest
A variety of conditions can lead to pinched nerves in the lower back, each with different causes and symptoms. Understanding the types of pinched nerves in this region is key to identifying and solving underlying problems. Here are some potential causes of a pinched nerve in the lower back.
Disc herniation
Your discs cushion the bones that form your spine. A herniated disc occurs when the soft inner core of a spinal disc pushes through the tough outer layer, sometimes pressing on nearby nerves. This can lead to pain, numbness, tingling and weakness in the lower back and legs, often made worse by movements such as bending or twisting.
Spinal stenosis
Spinal stenosis is a narrowing of the spinal canal. This can put pressure on the spinal cord and nerve roots. This condition occurs mainly in people over 50 years of age. However, younger people with spinal injuries are also at risk. Spinal stenosis can lead to symptoms such as back and leg pain, numbness, weakness and cramps.
Degenerative disc disease
Degenerative disc disease involves the gradual disintegration of the spinal discs, leading to a decrease in disc height and potential nerve compression. Under normal circumstances, spinal discs provide cushioning between the vertebrae and absorb pressure on the spine.
Those affected may have chronic low back pain, stiffness, and pain that radiates to the buttocks or legs, worsened by activities that involve bending or lifting. If the nerve is affected, numbness or weakness in the legs may also occur.
Spondylolisthesis
Spondylolisthesis it occurs when a vertebra slides forward over the one below it, potentially leading to nerve compression. Symptoms may include lower back pain, pain that radiates down the leg, and muscle weakness — especially during activities that involve bending or lifting. Other conditions that can lead to a pinched nerve in the lower back include:
- Benign (non-cancerous) or cancerous tumors
- Infections such as osteomyelitis (bacterial or fungal bone infection) or fungal infections
- Trauma or injury
- Rheumatoid arthritis (RA), an autoimmune disease that causes joint inflammation, pain, and swelling
Risk factors
Risk factors associated with developing a pinched nerve in the lower back include:
- Sedentary lifestyle or lack of regular exercise
- Excessive weight
- Occupations or activities that involve repetitive motion, heavy lifting, or prolonged sitting
- Genetics or family history of spinal disease
- Smoking
- Previous spinal injuries or surgeries
- Poor posture or improper body mechanics
- Engaging in activities with high impact or sudden twisting
- Aging causes the spinal discs and joints to wear down over time
- Multiple pregnancies
- Back trauma or injury
Diagnosing a pinched nerve in the lower back usually involves a combination of a medical history review, a physical exam, and diagnostic tests.
Based on the findings from these diagnostic steps, your healthcare provider can confirm the presence of a pinched nerve, identify its location and severity, and develop a personalized treatment plan to reduce symptoms and address the underlying cause.
Medical history and physical examination
Your healthcare provider will start by discussing your symptoms, medical history and any relevant factors such as recent injuries or activities that may have contributed to your condition. A physical exam will be performed to assess your range of motion, muscle strength, reflexes, and areas of tenderness or pain.
Neurological examination
A neurological exam evaluates nerve function by testing sensation, reflexes, and muscle strength in specific areas related to the affected nerve.
Imaging Studies
Your healthcare provider will likely use one or more imaging studies to help diagnose the problem. Here are some potential scans that could be ordered:
- x-ray: X-rays can help visualize bone structures and detect abnormalities such as bone spurs or fractures.
- Magnetic resonance imaging (MRI): MRI provides detailed images of soft tissues such as spinal discs, nerves and surrounding structures. It can detect herniated discs, nerve compression, or other spinal problems.
- Computed tomography (CT) scan: In some cases, a CT scan can provide additional information about the structures of the spine.
Electrodiagnostic tests
When a health care provider orders electrodiagnostic tests, they want to see how your nerves and muscles are working. Potential tests include electromyography (EMG) and nerve conduction studies (NCS).
EMG and NCS are tests used to check the health of your nerves and muscles.
EMG measures the electrical activity in your muscles when you are moving and when you are resting. This helps identify nerve damage, muscle disorders, or other problems that affect muscle function. NCS focuses on how well nerves send electrical signals to muscles. It can detect nerve damage, pinched nerves, or other problems that slow or interfere with nerve function.
These tests are often done together to best understand problems affecting your nerves and muscles.
Treatment depends on the severity of the symptoms, the underlying cause of the pinched nerve, and individual patient factors. Talk to your healthcare provider to develop a comprehensive treatment plan tailored to your needs.
Treatment for a pinched nerve in the lower back often aims to relieve pain, reduce inflammation, restore nerve function, and address the underlying cause. Here are common treatments and strategies:
Medicines
Nonsteroidal anti-inflammatory drugs (NSAIDs) such as Advil (ibuprofen) or Aleve (naproxen) can help reduce pain and inflammation. In the meantime, oral corticosteroids (eg, prednisone, methylprednisolone) or steroid injections may be prescribed to reduce inflammation around the affected nerve. Muscle relaxants can help relieve muscle spasms and improve mobility.
physical therapy
Stretching and strengthening exercises can improve flexibility and reduce pressure on the nerve. They can also improve muscle support for the spine. So, your healthcare provider may recommend physical therapy if you have a pinched nerve in your lower back. Physical therapists can also teach you how to properly walk, dress, lift, and do other activities to prevent worsening.
Surgery
In severe cases or when conservative treatments are ineffective, surgical options may be recommended to decompress (relieve pressure) on the nerve and stabilize the spine. These surgical procedures may include:
- Disk replacement operation
- Discectomyor removing part of a herniated disc
- Laminectomy, or removal of part of the bone that forms the spinal canal to relieve pressure
- Spinal fusion or fusion of vertebrae together
- Foraminotomy which enlarges the opening in the spinal bone through which the nerve passes
Preventing low back nerve entrapment involves adopting healthy habits, maintaining proper posture, and reducing activities that stress the spine. Here are some additional preventative measures:
- Incorporate regular exercise into your routine
- Maintain a healthy weight
- Follow a diet rich in calcium, phosphorus and vitamin D
- Use ergonomically designed furniture
- Wear comfortable shoes with a low heel
- Lift objects with your knees and leg muscles, engaging your abdominal muscles and keeping your head in line with your back
- Avoid twisting when lifting and keep objects close to the body
- Avoid smoking to improve blood flow in the lower spine
- Change your sitting position often
- Take walking breaks
When a nerve in the lower back is pinched or irritated, it can cause pain, numbness, tingling, or weakness from the lower back through the buttock or hip and down the leg on one or both sides. This can significantly affect mobility and daily activities.
In rare but severe cases, a pinched nerve in the lower back affecting the nerve roots at the base of the spinal cord can cause cauda equina syndrome. This syndrome is characterized by lower back pain, loss of bladder/bowel control, and leg weakness and requires immediate medical attention.
A pinched nerve in the lower back can lead to significant discomfort and limitations in daily activities. Preventative measures such as maintaining a healthy lifestyle, practicing proper body mechanics, and seeking emergency medical attention can reduce the risk of developing a pinched nerve.
Talk to healthcare professionals for personalized care and a treatment plan tailored to your needs.

