What Is Radiating Pain and What Can Cause It?

Radiating pain describes discomfort that originates in one area and moves to another. It starts at a focal point and then extends across a wider region.

For instance, a herniated spinal disc may produce lower back pain that tracks along the sciatic nerve into the leg. As a result, the leg becomes painful because of the compromised disc.

There are numerous reasons radiating pain can occur, and sometimes it signals a more serious medical issue. Below are possible causes and warning signs that warrant a medical evaluation.

How does radiating pain occur?

When a tissue is injured or diseased, nearby nerves transmit signals to the spinal cord. Those signals continue on to the brain, which registers the sensation as pain at the affected site.

Because the nervous system is interconnected, pain messages can spread beyond the original location. In other words, pain can travel, or radiate, along nerve pathways to other body parts supplied by the same nerves.

This transmission along nerve routes produces the phenomenon known as radiating pain.

Radiating pain versus referred pain

Radiating pain is distinct from referred pain. With radiating pain, the discomfort literally moves from one bodily location to another, following nerve pathways.

Referred pain, on the other hand, is when the source remains unchanged but the pain is perceived in a different area. The painful sensation is felt elsewhere without the actual problem relocating or enlarging.

An example is jaw discomfort during a heart attack; the heart is the source, but pain may be perceived in the jaw.

Pain can radiate from or to many regions of the body and may be intermittent, depending on the underlying cause. Observing the pattern of spread can help clinicians determine the origin and cause of the discomfort.

Below are common causes of radiating pain organized by the region where the pain is felt.

Pain that radiates down the legs

Pain that travels down one or both legs can be caused by several conditions, including:

Sciatica

The sciatic nerve extends from the lower (lumbar) spine through the buttock and down each leg. Sciatica, or lumbar radiculopathy, refers to pain along this nerve.

Sciatica typically produces radiating pain in one leg and may be accompanied by:

• pain that intensifies with movement
• a burning sensation in the leg
• numbness or weakness in the legs or feet
• tingling in the toes or feet
• pain in the foot

Sciatica can result from several spine-related problems (detailed below), as well as from injuries like falls or blows to the back, and from prolonged sitting.

Lumbar herniated disc

A herniated, or slipped, disc occurs when the soft, gel-like center of a spinal disc pushes through a tear in its tougher outer layer, potentially compressing nearby nerves.

When this happens in the lumbar spine, it’s known as a lumbar herniated disc and is a frequent cause of sciatica.

Compression of the sciatic nerve by the herniated disc may send pain down the leg into the foot. Other symptoms include:

• sharp, burning pain in the buttock, thigh, and calf that may reach part of the foot
• numbness or tingling
• muscle weakness

Piriformis syndrome

Piriformis syndrome arises when the piriformis muscle compresses the sciatic nerve, producing buttock pain that travels down the leg.

Additional symptoms might include:

• tingling and numbness down the back of the leg
• difficulty sitting comfortably
• pain that worsens with prolonged sitting
• buttock pain that increases during routine activities

Spinal stenosis

Spinal stenosis refers to narrowing of the spinal canal. When the canal narrows excessively, it can press on spinal nerves and cause pain.

Though it often affects the lumbar spine, stenosis can occur anywhere along the spine.

Symptoms include radiating leg pain and may also involve:

• lower back pain, especially when standing or walking
• weakness in a leg or foot
• numbness in the buttocks or legs
• balance difficulties

Bone spurs

Bone spurs, which commonly arise from injury or degenerative changes, can form on vertebrae and compress adjacent nerves, producing pain that radiates down the leg.

Pain that radiates to the back

Several conditions can cause pain to spread toward the back:

Gallstones

Gallstones form when excess cholesterol or bilirubin is present in bile, or the gallbladder fails to empty properly. Gallstones can obstruct the gallbladder and trigger biliary colic.

They often cause upper right abdominal discomfort that radiates to the back, typically between the shoulder blades.

Other possible signs include:

• right shoulder pain
• pain after eating fatty meals
• bloating
• nausea
• vomiting
• diarrhea
• dark urine
• pale-colored stools

Acute pancreatitis

Acute pancreatitis is inflammation of the pancreas and causes upper abdominal pain that may come on suddenly or gradually. The pain often radiates to the back.

Additional symptoms can include:

• worsening pain shortly after eating
• fever
• nausea
• vomiting
• sweating
• abdominal bloating
• jaundice

Advanced prostate cancer

When prostate cancer advances, it can spread to bones such as the spine, pelvis, or ribs. This spread commonly causes pain that radiates to the back or hips.

Advanced prostate cancer may also result in spinal cord compression or anemia.

Pain that radiates to the chest or ribs

Pain that extends into the chest or ribs can be caused by:

Thoracic herniated disc

While herniated discs more often affect the lumbar and cervical regions, they can also occur in the thoracic spine (mid and upper back). A thoracic herniated disc may press on nerves and produce thoracic radiculopathy.

The hallmark is middle or upper back pain that radiates to the chest. Other signs may include:

• tingling, numbness, or burning sensations in the legs
• weakness in the arms or legs
• headaches when sitting or lying in certain positions

Peptic ulcers

A peptic ulcer is a sore in the lining of the stomach or upper small intestine that causes abdominal pain, which can travel to the chest or rib area.

Other symptoms may include:

• pain on an empty stomach
• reduced appetite
• unexplained weight loss
• dark or bloody stools
• nausea
• vomiting

Gallstones

Gallstones may also trigger spasms and pain in the upper right abdomen that can radiate into the chest.

Pain that radiates down the arm

Causes of radiating arm pain include:

Cervical herniated disc

A herniated disc in the cervical spine (neck) is called a cervical herniated disc. This can produce nerve irritation known as cervical radiculopathy, which starts in the neck and radiates down the arm.

Other possible symptoms include:

• numbness
• tingling in the hand or fingers
• muscle weakness in the arm, shoulder, or hand
• increased pain with neck movement

Bone spurs

Bone spurs in the upper spine can compress nerves and lead to cervical radiculopathy, producing radiating arm pain, numbness, tingling, and weakness.

Heart attack

Pain that travels into the left arm can sometimes indicate a heart attack. Other symptoms to watch for include:

• shortness of breath
• chest pain or pressure
• a cold sweat
• dizziness
• nausea
• upper body pain

A heart attack is a life-threatening emergency. Call emergency services immediately if you suspect one.

When to seek medical attention

Mild radiating pain often improves on its own, but consult a doctor if you have:

• severe or increasing pain
• pain that persists beyond a week
• pain following an injury or trauma
• loss of bladder or bowel control

Seek immediate medical care if you suspect a:

• heart attack
• peptic ulcer
• gallbladder attack

Self-care strategies

If your pain is not due to a serious condition, home treatments may provide relief. Consider these measures:

• Stretching exercises. Gentle, regular stretching can ease nerve compression and muscle tightness.
• Avoid prolonged sitting. Take frequent breaks if you work at a desk and perform simple exercises during the day.
• Cold or heat therapy. An ice pack or heating pad can help relieve mild discomfort.
• Over-the-counter pain relievers. For mild sciatica or muscle pain, nonsteroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen (Advil, Motrin), naproxen (Aleve), or aspirin may reduce pain and inflammation.

Key takeaways

Radiating pain is pain that moves from one area of the body to another along connected nerve pathways. Because the nervous system links different regions, an issue in one spot can be felt elsewhere.

Pain may radiate from the back to the arm or leg, or from internal organs like the gallbladder or pancreas to the back or chest.

For minor causes, stretching and OTC pain relievers can help. If pain worsens, persists, or is accompanied by concerning symptoms, see a healthcare provider for diagnosis and a tailored treatment plan.