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Chronic Pain, CRPS and Fibromyalgia Compensation Claims

Chronic pain claims are a distinct and often difficult area of personal injury law. These conditions - complex regional pain syndrome (CRPS), fibromyalgia, chronic pain syndrome, chronic post-surgical pain - are diagnosed on clinical criteria rather than on objective imaging, and their valuation turns heavily on expert pain-medicine evidence. They typically develop after another injury (a fracture that doesn't settle; a surgical procedure; a crush injury; a whiplash) and sit on top of the original injury's valuation. The Judicial College Guidelines 17th edition (April 2024) has severe-through-moderate brackets for CRPS and for 'chronic pain syndromes and similar'.

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Chronic pain claims are a distinct and often difficult area of personal injury law. These conditions - complex regional pain syndrome (CRPS), fibromyalgia, chronic pain syndrome, chronic post-surgical pain - are diagnosed on clinical criteria rather than on objective imaging, and their valuation turns heavily on expert pain-medicine evidence. They typically develop after another injury (a fracture that doesn't settle; a surgical procedure; a crush injury; a whiplash) and sit on top of the original injury's valuation. The Judicial College Guidelines 17th edition (April 2024) has severe-through-moderate brackets for CRPS and for 'chronic pain syndromes and similar'.

Chronic pain claims are a distinct and often difficult area of personal injury law. These conditions - complex regional pain syndrome (CRPS), fibromyalgia, chronic pain syndrome, chronic post-surgical pain - are diagnosed on clinical criteria rather than on objective imaging, and their valuation turns heavily on expert pain-medicine evidence. They typically develop after another injury (a fracture that doesn't settle; a surgical procedure; a crush injury; a whiplash) and sit on top of the original injury's valuation. The Judicial College Guidelines 17th edition (April 2024) has severe-through-moderate brackets for CRPS and for 'chronic pain syndromes and similar'.

Casibus works with SRA-regulated personal injury specialists on a no win, no fee basis. Every case depends on its evidence.

JCG 17th edition chronic pain brackets

Complex regional pain syndrome (CRPS) - severe

CRPS with very significant ongoing effects including impact on ability to work and daily function, need for long-term pain medication, psychological sequelae. JCG 17th edition top-of-bracket reaches mid-five to low-six figures.

CRPS - moderate

Ongoing significant symptoms but less severe or with better prognosis than the severe bracket. Typically low to mid-five figures.

Fibromyalgia / chronic pain syndrome - moderate to severe

The JCG 'other pain disorders' bracket covers fibromyalgia, somatoform pain disorder, chronic pain syndrome, chronic post-surgical pain. Valuation runs from low-five figures at the bottom of the bracket to mid-five figures at the top for severe disabling cases where the condition has substantial functional impact and poor prognosis.

Short-term chronic pain

Post-traumatic pain lasting beyond expected recovery but which resolves over time. The lower end of the bracket.

Complex regional pain syndrome - what it is and how it's proved

CRPS is a neuropathic / neuropsychological pain disorder in a limb following injury (often relatively minor), characterised by pain out of proportion to the inciting injury, sensory changes (allodynia, hyperalgesia), vasomotor signs (temperature / colour asymmetry), sudomotor signs (sweating asymmetry, oedema), and motor / trophic changes. Diagnosis uses the 'Budapest criteria' (signs and symptoms across 4 domains). Type I (formerly RSD) follows without identified nerve injury; Type II (formerly causalgia) follows identified nerve injury.

Proving CRPS in litigation requires: (i) an expert pain-medicine consultant (ideally Faculty of Pain Medicine accredited); (ii) Budapest-criteria-compliant clinical findings; (iii) ruling out alternative explanations; (iv) functional capacity evaluation; (v) often psychological / psychiatric assessment given the common overlap with anxiety, depression, and post-traumatic adjustment. The defendant's expert will probe the diagnosis vigorously; our instructed experts are selected accordingly.

Fibromyalgia and chronic pain syndrome in litigation

Fibromyalgia is a chronic widespread pain disorder with fatigue, sleep disturbance and cognitive features; it's diagnosed clinically using the ACR criteria (tender points historically, now more symptom-based). Chronic pain syndrome is a broader category covering pain persisting beyond expected recovery time, typically with psychological / behavioural sequelae.

The litigation challenge is causation. A claimant with pre-existing fibromyalgia or a chronic-pain tendency may develop disabling symptoms after an accident; the question is whether the accident caused, accelerated or exacerbated the condition. 'Eggshell skull' principles apply - you take the claimant as you find them - so an accident that materially worsens a pre-existing chronic-pain tendency is actionable. Expert rheumatology / pain-medicine evidence plus detailed pre-accident GP records settle the causation question. NICE NG193 (chronic primary pain) informs the clinical framework.

Common routes to a chronic pain claim

  • Orthopaedic injury that doesn't settle - a wrist fracture, ankle fracture, or shoulder surgery that develops CRPS afterwards.

Special damages in chronic pain claims

  • Pain-medicine specialist input - nerve blocks, radiofrequency ablation, spinal cord stimulators (for severe CRPS).

Frequently asked questions

Possibly. CRPS most commonly follows distal upper-limb fractures (particularly wrist) and ankle fractures, with a meaningful minority of patients developing the syndrome. The diagnosis needs a pain-medicine consultant applying the Budapest criteria. If confirmed, the original orthopaedic bracket is set aside in favour of the (much higher) CRPS bracket. See hand and wrist injury claims for the underlying injury.
Yes - 'eggshell skull' principles apply. A defendant must take the claimant as they find them. An accident that materially accelerated or exacerbated a pre-existing fibromyalgia / chronic-pain tendency is actionable for the additional element. Expert evidence apportions the pre-existing and post-accident components.
Through: (i) expert pain-medicine evidence; (ii) clinical records demonstrating the temporal sequence and the absence of alternative explanations; (iii) functional capacity evaluation; (iv) psychological / psychiatric evidence where relevant; (v) surveillance evidence occasionally deployed by defendants - honest consistent evidence is the claimant's best defence.
In many chronic-pain claims, yes - particularly for conditions where objective imaging is normal. Defendants may commission covert surveillance and put the claimant's credibility in issue. Our advice is always: be honest and consistent. Under-report your 'good days' is as damaging as over-reporting your 'bad days'. Your solicitor will prepare you.
Three years from the date of the accident or date of knowledge. In chronic-pain cases, date of knowledge can be later than the accident - when the chronic nature of the condition is first appreciated. See time limits.
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