Referred (Visceral) Pain

This entire page is free, permanently — all seven sections. Red flag content is never gated in CliniStudy.

Who: Anyone. History of cardiac, gastrointestinal, renal or gynaecological conditions raises it; the absence of that history does not lower it much.
What: Pain referred to a musculoskeletal region from an organ.
How it behaves: Deep, poorly localised, non-mechanical. Varies with meals, exertion, urination, bowel or menstrual pattern — not with movement. Unchanged by rest, position or manual therapy.

The one thing to take from this page:

Your job is not to name the organ. It is to notice that the pain behaviour does not fit local musculoskeletal tissue — and to act on that.

Why it refers at all, in one line

Visceral afferents converge on the same spinal segments as somatic ones, and the central representation is imprecise — so the brain localises the signal to the body wall rather than the organ [1][2][3]. That's the leading theory, not a settled one — convergence is one of two proposed mechanisms, and referred pain is less studied than radicular or neuropathic pain (Jin et al. 2023) [3]. That is also why it can sensitise somatic tissue — which is how a visceral problem ends up tender under your hand.

⚠️ No Australian guideline covers visceral screening in musculoskeletal practice — and the international position is itself unsettled. Red flags are defined inconsistently across clinical practice guidelines [4]. That inconsistency is itself the finding. For the cardiac mimic, the Australian anchor is the NHFA/CSANZ ACS guideline 2025 [21].

Five stages, in your course's order. The special/screening questions are the pattern — and on this one they are organised by system, not by a generic list.

MAIN PROBLEM

"It's a deep ache and I can't put my finger on it."
"It comes on after I eat, not when I move."
"It's in my shoulder, but it's nothing like when I hurt my shoulder before."

BODY CHART

• Draw it, and note how well they can outline it. A patient who cannot localise the pain with one finger is telling you something.
• Mark referral zones — right shoulder and scapula, mid-back, flank and groin, jaw and teeth, chest and arm.
• Draw the abdomen and chest on the chart too. If you have not drawn them, you have not asked about them.

BEHAVIOUR

This is the section, and the finding is an absence.

HISTORY

• Known cardiac, gastrointestinal, renal or gynaecological conditions.
• Vascular risk — smoking, diabetes, hypertension, cholesterol, family history.
• Has this been investigated before, and what was found? And remember the mimicry runs both ways: spinal disease masquerades as abdominal disease and abdominal disease masquerades as spinal (Mirbagheri et al. 2023).

SPECIAL / SCREENING QUESTIONS — by system

• Cardiac: exertional chest, neck, jaw, shoulder or arm symptoms · shortness of breath · nausea · sweating · a sense of doom. Coronary pain is not always classic (Abdullatef et al. 2024), and craniofacial pain has been the sole warning sign of an acute coronary syndrome (Fazlyab et al. 2015; López-López et al. 2012).
• Respiratory: pain worse on breathing or coughing · shortness of breath · calf swelling.
• Gastrointestinal: relationship to meals, and to fatty meals · nausea · vomiting · bowel change · reflux (Drewes et al. 2006).
• Renal / urinary: flank or groin pain · haematuria · fever · urinary symptoms · colic (Pedersen et al. 2010).
• Gynaecological: menstrual pattern, pelvic pain, cyclical symptoms — endometriosis can present as non-specific low back, buttock, abdominal or thigh pain (Troyer et al. 2007).
• Constitutional: fever · night sweats · unexplained weight loss · fatigue.

The one that outranks the ranking

Cardiac goes first, every time. Not because it is most likely, but because it is the one where a delay of hours matters. An acute myocardial infarction has presented as shoulder pain in physiotherapy direct access (Storari et al. 2021), coronary pain is frequently at non-classic sites (Abdullatef et al. 2024), and craniofacial pain has been the sole prodromal sign (Fazlyab et al. 2015).

And nothing here is excluded by your examination. The ranking tells you which phone call to make first.