Understanding Referred Pain and Why It Can Be Misleading

Pain seems like it should be simple. If your shoulder hurts, the problem must be in your shoulder. If your knee hurts, the problem must be in your knee… right? Not always.

One of the most confusing parts of pain is something called referred pain. It’s when you feel pain in one area of your body, but the actual source is somewhere else entirely. And if you don’t understand that, it can send both patients and providers “chasing pain” in the wrong place.

Why Referred Pain Is Felt In A Different Place

Referred pain happens when you feel pain in one part of your body, but the actual source of the problem is somewhere else.[1]

Researchers believe this occurs because different nerves from different parts of the body converge and share pathways in the spinal cord and brain. When those signals overlap, your brain can misinterpret where the pain is coming from.[2; 3]

In some cases, the referred area doesn’t just hurt; it can become more sensitive to pressure or touch. This phenomenon, called secondary hyperalgesia, has been documented in both visceral and musculoskeletal referred pain patterns.[4]

In simple terms: Your brain gets the signal, but mislabels the address.

Some classic musculoskeletal examples include:

• Low back structures causing pain in the buttocks or hip
• Cervical spine issues are causing pain in the shoulder blade
• Sacroiliac joint dysfunction refers to groin pain
• Facet joint irritation refers to pain in the thigh [5]

This is why irritation in the lumbar spine can feel like hip pain, or why a neck issue can show up as shoulder blade discomfort. The tissues causing the pain aren’t located where you feel it. The nervous system is simply a system of overlapping signals. That overlap can make pain patterns confusing, especially if you’re relying only on where it hurts to guide treatment.

Why Referred Pain Can Be Confusing

If pain manifests in a different location than its source, imaging can be challenging.

For example:

• A patient feels hip pain.
  • Hip imaging is normal.
    • The real source? Lumbar facet joints or disc irritation referring pain downward [5]

This is why a skilled pain specialist doesn’t just treat “where it hurts.” They evaluate patterns, movement, history, and exam findings before deciding whether this is disc vs muscle pain, joint irritation, or nerve involvement.

Imaging is helpful, but it must be interpreted in context. Studies show that many people have disc bulges or degenerative changes on MRI without pain at all.[6] That means scans alone are not reliable.

If your pain seems to move, change, or not match imaging findings, referred pain may be part of the story.

It’s also important to distinguish between referred and radiating pain. Radiating pain follows the path of a nerve, like a pinched nerve from a disc herniation, sending pain down an arm or leg.[7] Referred pain doesn’t follow a clear nerve pathway and often feels deeper or harder to pinpoint.[2; 8] They can overlap, but they stem from different mechanisms.

Common Conditions That Cause Referred Pain

Referred pain isn’t random. It follows patterns. Understanding those patterns helps narrow down the true source.

Here are some of the most common causes:

Musculoskeletal Sources (Most Common in Pain Management)

Many cases of referred pain come from the spine, joints, or muscles.

• Lumbar or cervical facet joint irritation can refer pain into the buttock, thigh, or shoulder blade.
• Sacroiliac joint dysfunction may cause pain in the low back, groin, or hip region.
• Myofascial trigger points in tight muscles can create predictable referral patterns away from the muscle itself.[2]
• Degenerative disc changes or spinal stenosis can generate pain that doesn’t sit directly over the spine.
• Some pinched nerve conditions may produce both radiating and referred pain patterns [7]

These are frequently evaluated and treated in interventional pain management settings.

Experimental and clinical research has shown that pain originating in muscles or joints can “open” new pain pathways at the spinal level, allowing referral to nearby muscle groups through central sensitization.[4]

Neurological Causes

When nerves are irritated, compressed, or damaged, pain signals can become distorted. While radiating pain follows a nerve pathway, nerve-related conditions can also contribute to referred pain patterns due to signal overlap in the spinal cord. [3]

Visceral (Organ-Related) Referred Pain

Not all referred pain comes from the musculoskeletal system. Internal organs can refer pain to distant areas because they share nerve pathways with skin and muscles.

For example:

• Heart conditions can refer to pain in the left arm or jaw.
• Gallbladder irritation may refer to pain in the right shoulder blade.

This overlap happens because visceral and somatic nerve fibers converge in the spinal cord.[1;2]

Inflammatory Conditions

Certain inflammatory conditions, such as appendicitis or pancreatitis, can also produce referred pain away from the primary site due to shared nerve pathways.[7]

Why the Source of Pain Matters More Than the Location

Not all hip pain is hip pain. Not all shoulder pain starts in the shoulder. And not all back pain originates exactly where you feel it. Recognizing which category a pain pattern fits into helps guide imaging use, diagnostic testing, and appropriate treatment. It reduces the risk of chasing symptoms in the wrong location and increases the likelihood of targeting the true pain generator.

How Pain Specialists Identify the True Source of Your Pain

Because referred pain can be deceptive, identifying the true source requires more than pointing to where it hurts. A detailed physical exam and recognition of known referral patterns help narrow things down.[2] Imaging can be helpful, but scans don’t always correlate with symptoms.[3]

In some cases, diagnostic nerve blocks or joint injections temporarily numb a suspected source. If the pain improves, the origin has likely been confirmed.[1]

Is Your Pain Location Moving?

If you’ve ever thought:

• “My hip hurts, but sometimes it’s my back.”
• “My shoulder pain started in my neck.”
• “The MRI doesn’t match what I’m feeling.”

You’re not imagining things. Pain doesn’t always behave logically. The nervous system is complex, and referred pain is well-documented in medical literature.[7; 2] The key is working with a provider who understands that pain patterns matter more than just location.

Referred Pain Management: Treat the Source, Not Just the Symptom

Referred pain is sneaky. Treating it can be tricky, but it’s crucial. If we only chase where it hurts, we risk missing the true cause. And in pain management, precision matters.

Whether your symptoms involve discs, muscle pain, joint irritation, or a pinched nerve, the goal isn’t just temporary relief; it’s to identify and treat the actual generator of pain.

If your pain seems confusing, shifts locations, or doesn’t match what imaging shows, don’t assume it’s “all in your head.” It may simply be referred pain. It can be harder to track down. But once the true source is identified, a comprehensive, multidisciplinary treatment plan can be built around the actual pain generator — and that’s when real progress begins.

Disclaimer: This content is for educational purposes only and is not a substitute for medical advice, diagnosis, or treatment. Pain conditions and treatment options vary from person to person, so always talk with a qualified healthcare provider about what’s right for you. If you experience sudden or worsening pain, or symptoms like numbness, weakness, chest pain, shortness of breath, or changes in bladder or bowel control, seek medical care right away.

Resources:

1. Referred Pain. Cleveland Clinic [Internet]. Accessed February 21, 2026. Available from: https://my.clevelandclinic.org/health/symptoms/25238-referred-pain
2. Referred Pain. Physiopedia [Internet]. Accessed February 21, 2026. Available from: https://www.physio-pedia.com/Referred_Pain
3. Jin Q, Chang Y, Lu C, Chen L, Wang Y. Referred pain: characteristics, possible mechanisms, and clinical management. Front Neurol. 2023 Jun 28;14:1104817. doi: 10.3389/fneur.2023.1104817. PMID: 37448749; PMCID: PMC10338069. Accessed February 21, 2026. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC10338069/
4. Giamberardino MA. Referred muscle pain/hyperalgesia and central sensitisation. Journal of Rehabilitation Medicine [Internet]. 2003;35(0):85-88. doi:https://doi.org/10.1080/16501960310010205 Accessed February 21, 2026. Available from: https://medicaljournals.se/jrm/content/abstract/10.1080/16501960310010205
5. Asher A. 4 Serious Causes of Referred Back Pain. Verywell Health [Internet]. Updated November 09, 2021. Accessed February 21, 2026. Available from: https://www.verywellhealth.com/causes-of-referred-back-pain-296729
6. Brinjikji W, Luetmer PH, Comstock B, Bresnahan BW, Chen LE, Deyo RA, Halabi S, Turner JA, Avins AL, James K, Wald JT, Kallmes DF, Jarvik JG. Systematic literature review of imaging features of spinal degeneration in asymptomatic populations. AJNR Am J Neuroradiol. 2015 Apr;36(4):811-6. doi: 10.3174/ajnr.A4173. Epub 2014 Nov 27. PMID: 25430861; PMCID: PMC4464797. Accessed February 21, 2026. Available from: https://pmc.ncbi.nlm.nih.gov/articles/PMC4464797
7. Nunez K. What Is Radiating Pain and What Can Cause It? Healthline [Internet]. Published March 16, 2020. Accessed February 21, 2026. Available from: https://www.healthline.com/health/radiating-pain
8. Woessner J. Referred Pain vs. Original of Pain Pathology. Pract Pain Manag [Internet]. 2003;3(6). Accessed February 21, 2026. Available from: https://www.medcentral.com/pain/chronic/referred-pain-vs-origin-pain-pathology