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Intermittent Rib Pain: Differential Diagnosis & When to Seek Care

Intermittent rib pain—pain that comes and goes—has a broad differential spanning musculoskeletal, visceral, and neuropathic origins. Pattern recognition guides evaluation.

Common Musculoskeletal Causes

ConditionTypical FeaturesAggravating / Relieving Factors
CostochondritisTender costochondral junctions (2nd–5th); reproducible pain↑ with deep breath, cough, movement; ↓ with rest, NSAIDs
Rib Stress FractureInsidious onset; point tenderness; often rowers, golfers, coughers↑ with activity; may have callus on imaging
Intercostal Muscle StrainSharp, localized; follows exertion/twisting↑ with stretch, deep inspiration
Slipping Rib SyndromeClicking/popping; subluxation of 8th–10th rib tipsReproduced by hooking maneuver; ↑ with bending
Tietze SyndromeCostochondritis + visible swelling (2nd/3rd costochondral)Similar to costochondritis

Visceral / Referred Pain (Often Overlooked)

  • Biliary: RUQ/right subscapular radiation; postprandial (fatty meals); nausea. Murphy's sign.
  • Pancreatic: Epigastric, boring, radiates to back; ↑ lying flat; alcohol/gallstones.
  • Pulmonary: Pleuritic (sharp, inspiration); pneumonia, PE, pneumothorax, pleurisy.
  • Cardiac: Atypical angina—may mimic rib pain; exertional, pressure-like, diaphoresis.
  • Renal: Flank → groin; colicky; hematuria (stones).
  • Splenic: LUQ → left shoulder (Kehr's sign); trauma, mono, infiltration.

Neuropathic / Nerve-Related

  • Intercostal Neuralgia: Burning, lancinating, dermatomal; post-herpetic, post-thoracotomy, entrapment.
  • Radiculopathy (T1–T12): Band-like, may wrap anteriorly; motor/sensory changes.
  • Post-Mastectomy Pain Syndrome: Intercostobrachial nerve injury.

Red Flags – Urgent Evaluation Needed

  • Crushing chest pain, diaphoresis, radiation to jaw/arm → ACS / MI
  • Sudden tearing back pain → Aortic dissection
  • Pleuritic pain + tachycardia, hypoxia, hemoptysis → PE
  • Fever + focal chest wall erythema/fluctuance → Empyema / abscess
  • Unexplained weight loss, night sweats → Malignancy

Diagnostic Approach

  1. History: onset, quality, radiation, timing, triggers, associated symptoms, trauma, illness
  2. Exam: palpation (costochondral, ribs, spine), respiratory excursion, Carnett's sign (abdominal wall vs. visceral), thoracic spring test
  3. Imaging: CXR (first), rib series (if fracture suspected), CT chest/abdomen (visceral), MRI (soft tissue/nerve)
  4. Labs: CBC, CRP, LFTs, lipase, troponin, D-dimer as indicated

Management Principles

  • Musculoskeletal: NSAIDs, heat/ice, activity modification, PT (scapular stabilization, breathing retraining), intercostal block if refractory
  • Visceral: Treat underlying cause (cholecystectomy, PPI, anticoagulation, etc.)
  • Neuropathic: Gabapentinoids, TCAs, topical lidocaine, nerve blocks, neuromodulation

Intermittent does not mean benign. New, changing, or concerning rib pain warrants clinical evaluation.

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