Complex Regional Pain Syndrome (CRPS) Supportive Care Protocol

Complex Regional Pain Syndrome (CRPS), formerly called Reflex Sympathetic Dystrophy (RSD), is a chronic pain condition usually affecting a limb after injury, surgery, or trauma. The pain is typically out of proportion to the initial injury and involves changes in skin color, temperature, swelling, and movement.

TYPES OF CRPS:

•CRPS Type I: No confirmed nerve injury (formerly RSD)

•CRPS Type II: With confirmed nerve injury (formerly causalgia)

SYMPTOMS include:

•Severe, burning or throbbing pain

•Sensitivity to touch or cold (allodynia)

•Skin color changes (red, blue, mottled)

•Skin temperature changes (warm or cold)

•Swelling

•Reduced range of motion

•Changes in skin texture, hair, or nail growth

•Muscle weakness or atrophy

CRITICAL: CRPS requires specialized multidisciplinary treatment. Early intervention is crucial. This protocol is SUPPORTIVE ONLY.

TREATMENT APPROACHES:

•Physical/Occupational Therapy: Essential - maintain function and movement

•Medications: NSAIDs, anticonvulsants (gabapentin), antidepressants, bisphosphonates

•Nerve Blocks: Sympathetic blocks, ketamine infusions

•Spinal Cord Stimulation: For refractory cases

•Psychological Support: CBT, pain psychology

•Mirror Therapy/Graded Motor Imagery: Brain retraining

PREVENTION:

* Vitamin C (500-2000mg daily) after fractures and surgery has strong evidence for reducing CRPS development - discuss with surgeon.

* Alpha-Lipoic Acid and PEA may help with neuropathic pain components.

* Topical DMSO has some specific evidence for CRPS.

Expected timeline: CRPS is a chronic condition. Early treatment within first 6-12 months has best outcomes. Supplements support overall pain management.

Clinical Perspective

Complex Regional Pain Syndrome: Chronic neuropathic pain syndrome typically after limb injury. Budapest criteria: continuous pain disproportionate to inciting event + symptoms and signs in multiple categories (sensory, vasomotor, sudomotor/edema, motor/trophic). Stages: acute (warm, edema), dystrophic, atrophic - though progression variable. Pathophysiology: inflammation, central sensitization, autonomic dysfunction, neuroplasticity. Prognosis: better with early treatment; can become chronic and disabling.

CRITICAL: Multidisciplinary approach essential. Early intervention crucial. Physical therapy cornerstone - maintain function. Medications: gabapentinoids, duloxetine/TCAs, bisphosphonates (alendronate, neridronate), NSAIDs, short-term corticosteroids. Interventional: sympathetic blocks, spinal cord stimulation, ketamine. Psychology: CBT, pain acceptance. Vitamin C for prevention after fracture/surgery. Supplements supportive.

* Vitamin C (A-grade): CRPS prevention. Systematic review: (PMID: 23075608). RCT: (PMID: 26096827). 500-2000mg daily for prevention after trauma/surgery. Strong evidence.

* Magnesium (C-grade): NMDA antagonist; central sensitization. Systematic review: (PMID: 28445426). 400-600mg daily.

* Omega-3 Fatty Acids (C-grade): Anti-inflammatory. Systematic review: (PMID: 27840029). 2-4g EPA+DHA daily.

* Alpha-Lipoic Acid (B-grade): Neuropathic pain. Meta-analysis: (PMID: 27840029). 600mg daily.

* B-Complex (C-grade): Nerve support. Review: (PMID: 28660890). Daily. Avoid >100mg B6.

* Vitamin D (C-grade): Chronic pain. Meta-analysis: (PMID: 28750270). 2000-4000 IU daily.

* PEA (C-grade): Neuropathic/inflammatory pain. Meta-analysis: (PMID: 29430697). 600-1200mg daily.

* DMSO (Topical) (B-grade): Free radical scavenger. RCT for CRPS: (PMID: 19192328). 50% cream 3-5x daily.

Assessment targets: Pain scales (NRS, BPI), function assessment, skin temperature/color, ROM, Budapest criteria, psychological assessment.

Protocol notes: Early treatment: within first 6 months has best outcomes; don't wait for specialist. Physical therapy: essential - desensitization, weight bearing, mirror therapy, graded motor imagery. Immobilization: avoid prolonged immobilization; promotes use. Bisphosphonates: neridronate, alendronate have RCT evidence; may work through bone/inflammation. Ketamine: IV infusions at specialized centers for refractory cases. Spinal cord stimulation: consider if refractory to conservative treatment. Psychology: catastrophizing and fear-avoidance worsen outcomes; CBT helps. Sleep: often disrupted; address aggressively. Opioids: generally avoid; limited efficacy, risks. Sympathetic blocks: diagnostic and therapeutic; may help some patients. Spread: can spread to other limbs in some cases. Pediatric CRPS: better prognosis than adult; multidisciplinary approach. Work: return to work/function important goal. Support groups: valuable for coping with chronic condition.

View All Protocols