If you’ve ever felt a sharp, burning pain shoot from your lower back down through your leg, you may be dealing with sciatica. It’s one of the most common and most misunderstood sources of back and leg pain, affecting millions of people at some point in their lives.

Here’s what’s actually happening in your body, what causes it, and what you can do about it.

What Is Sciatica?

Sciatica isn’t a disease on its own, it’s a symptom. It happens when the sciatic nerve, which runs from the lower spine through the buttocks and down each leg, becomes irritated or compressed. When a nerve root gets pinched, pain doesn’t stay put, it radiates along the entire path of the nerve, which is why sciatica can feel like it’s affecting your whole leg even though the root problem is in your spine.

Common Symptoms of Sciatica

Sciatica shows up differently for everyone, but the most common signs include:

• Pain that starts in the lower back or buttock and travels down one leg
• Sharp, burning, or shooting pain
• Numbness or tingling in the leg or foot
• Muscle weakness in the affected leg
• Pain that worsens when sitting, coughing, or sneezing
• Difficulty standing up or walking comfortably

The pain itself can feel sharp or electric-shock-like, burning, stabbing, or simply a deep, persistent ache.

What Causes Sciatica?

Several underlying spinal issues can trigger sciatica:

• Herniated disc — A spinal disc bulges or ruptures and presses on a nerve root.
• Spinal stenosis — The spinal canal narrows and compresses nearby nerves.
• Degenerative disc disease — Age-related wear on spinal discs can irritate nerve roots.
• Spondylolisthesis — One vertebra slips forward over another, pinching nerves.
• Injury or trauma to the lower spine.
• Pregnancy-related pressure on the sciatic nerve as the body changes.

How to Prevent Sciatica

You can’t control every risk factor, but these habits meaningfully lower your odds of a flare-up:

• Maintain a healthy weight
• Avoid prolonged sitting
• Maintain good posture
• Use proper lifting techniques
• Exercise regularly
• Strengthen your core muscles

How Sciatica Is Diagnosed

A doctor will typically start with your symptoms and medical history, then move into a physical exam that checks muscle strength and reflexes. If needed, imaging studies help confirm what’s going on, including:

• MRI
• CT scan
• X-rays (to assess bone changes)

Sciatica Treatment Options

The good news: most cases of sciatica improve within a few weeks. Common first-line treatments include:

• Neuromuscular and alternative therapy
• Stretching and physical therapy
• Applying heat or ice
• Correcting posture
• Yoga

For more severe or persistent cases, treatment may escalate to:

• Advanced neuromuscular and alternative therapy
• Surgery, for persistent or severe nerve compression

When to Seek Medical Attention Immediately

Most sciatica resolves with conservative treatment, but certain symptoms need urgent medical attention:

• Severe or worsening weakness in the leg
• Numbness around the groin or buttocks (the “saddle” area)
• Severe pain following a major injury

These can signal a more serious condition, such as cauda equina syndrome, which requires immediate care.

Frequently Asked Questions

How long does sciatica usually last?

Most cases resolve within four to six weeks with conservative treatment like stretching, physical therapy, and activity modification.

Can sciatica go away on its own?

Yes, many mild to moderate cases improve without surgery, especially when caught early and managed with rest, movement, and posture correction.

Is walking good or bad for sciatica?

Gentle walking is generally recommended. It keeps blood flowing to the area and can help ease stiffness, though high-impact activity should be avoided during a flare-up.

What sleeping position is best for sciatica?

Lying on your back with a pillow under your knees, or on your side with a pillow between your knees, can reduce pressure on the sciatic nerve.