Complex Regional Pain Syndrome (CRPS) after a car accident
CRPS can be one of the most challenging injury patterns in a claim — symptoms can be severe, function can be significantly affected, and the diagnosis/treatment pathway can be contested.
General information only — the right pathway depends on your circumstances.
Common features (high level)
- Severe pain disproportionate to the initial injury
- Swelling, colour/temperature changes, sweating changes
- Marked sensitivity (allodynia/hyperalgesia)
- Reduced range of motion and loss of function
CRPS requires careful clinical assessment. What matters in a claim is a well-documented clinical picture over time.
Evidence that commonly matters
- Consistent clinical documentation: objective signs recorded across appointments.
- Specialist evidence: pain specialist and/or rehabilitation physician reports.
- Functional evidence: impact on hand use, walking tolerance, sleep, self-care.
- Treatment plan: active rehab strategies and justification for any proposed interventions.
Common dispute issues
- Diagnosis criteria and alternative explanations
- Causation (accident-related injury vs later developments)
- Whether treatment is “reasonable and necessary”
- Work capacity and long-term functional restrictions
If a treatment request has been declined, see treatment refused disputes and the Personal Injury Commission (PIC) pathway for medical assessments where insurer and treating opinions remain in conflict.
Frequently asked questions
- What is CRPS (plain English)?
- CRPS is a complex pain condition that can occur after injury. It can involve severe pain, swelling, colour/temperature changes, sensitivity to touch, and functional limitation, often affecting a limb.
- Why is CRPS often disputed?
- Because diagnosis can be complex and symptoms can overlap with other conditions. Insurers may dispute causation, diagnosis criteria, and the necessity of particular treatments.
- What evidence usually matters in CRPS matters?
- Detailed clinical records, specialist pain/rehabilitation opinions, documented objective signs over time, and functional evidence. The right evidence depends on the case.
- If imaging is not dramatic, how do you make a CRPS claim decision-ready?
- Build a disciplined chronology that aligns onset timing, serial objective signs, treatment response, and function limits. In CRPS disputes, longitudinal clinical consistency is usually more persuasive than a single scan impression.
- Should treatment-approval disputes be filed together with long-term impairment (WPI) issues in CRPS matters?
- Usually no. Keep treatment reasonableness/necessity disputes and long-term impairment methodology/timing disputes in coordinated but separate streams, so urgent care decisions are not delayed by broader WPI arguments.
- If a sympathetic block gives short relief, can the insurer argue CRPS has effectively resolved?
- Not on that fact alone. A short post-procedure response should be tested against 4–6 weeks of function data (activity tolerance, flare timing, medication changes, sleep disruption, next-day recovery) before drawing capacity conclusions.
- Can the insurer rely on one independent exam saying “mild symptoms” to cut weekly benefits in a CRPS claim?
- A single snapshot opinion should be weighed against the full longitudinal record. In practice, decision-ready rebuttals map week-by-week treating notes, objective signs, medication effects, and functional reliability (including post-activity flares) to show why sustained capacity is not established.