29/11/2025
Shoulder pain: phenotyping
Part 2: clinical features
BACKGROUND:
🔎Identifying pain phenotypes may allow clinicians to tailor treatment—whether pharmacological, surgical, exercise-based, or psychologically informed—toward the underlying mechanisms driving a patient’s pain.
📍A recent narrative review by De Baets et al. (2025) argues that accurately phenotyping a patient’s shoulder pain is essential for targeted assessment and more effective, mechanism-informed management.
NOCICEPTIVE PAIN:
📚Typically linked to a clear onset, with symptoms that are proportionate, predictable, and mechanically provoked.
🕵️♂️Pain follows an anatomically logical pattern and usually responds to NSAIDs.
👨⚕️Clinical tests that load or stress the injured tissues reproduce symptoms, while irrelevant tests remain negative.
👨🔬Quantitative sensory testing (QST) may show local hypersensitivity (ie: peripheral sensitisation).
NEUROPATHIC PAIN:
📚Arises from nerve injury or disease and follows a neuroanatomically consistent distribution.
🕵️♂️Pain is often severe, irritable, spontaneous, and may disturb sleep. Sensory changes such as numbness, tingling, or allodynia are common, and NSAIDs are generally ineffective.
👩⚕️Clinical examination reveals pain with neural tension or compression tests and sensory abnormalities along the nerve.
🧑🏼🔬QST may show reduced thermal or pressure thresholds and localized hyperalgesia.
NOCIPLASTIC PAIN:
📚Features unclear onset, disproportionate and inconsistent pain that is widespread and not mechanically driven.
🕵️♂️Symptoms fluctuate and are often influenced by psychosocial factors, with frequent comorbidities such as sleep disturbance or obesity.
👨⚕️Examination shows inconsistent responses and widespread hypersensitivity, including static and dynamic allodynia.
👨🔬QST commonly demonstrates generalized sensory dysfunction, including widespread hyperalgesia, enhanced temporal summation, and reduced conditioned pain modulation (i.e.: central sensitisation)
SUMMARY:
💡Clinicians should consider incorporating diagnostic labels based on pain mechanisms in an attempt to improve and streamline clinical reasoning for musculoskeletal pain conditions.
MW
Reference:
De Baets L, Kuppens K, Labie C, Haik MN, Kapreli E, Bilika P, Struyf F, Borms D, Fernández-de-Las-Peñas C, Kosek E, Lluch E, Testa M, Lewis J, Goossens Z, Schilz M, Bonneux I, Nijs J. Shoulder pain phenotyping: A guide for clinicians to determine predominant nociceptive, neuropathic, or nociplastic shoulder pain. Brazilian Journal of Physical Therapy,2025;19:10240.