ESA for Complex Regional Pain Syndrome (CRPS): How to Describe Your Limitations on the WCA
Updated June 2026 - Based on current WCA descriptor framework
Complex Regional Pain Syndrome (CRPS) causes severe, persistent pain in a limb that is out of all proportion to any original injury. The affected hand, arm, foot or leg can be swollen, the skin can change colour and temperature, and the slightest touch, draught or vibration can trigger agony. For many people the limb becomes barely usable, and the constant pain drains energy and concentration. The pain often overlaps with conditions such as peripheral neuropathy and wider chronic pain, so describe every way it limits you.
The Work Capability Assessment (WCA) does not ask "do you have CRPS?" - it asks how your condition affects your ability to perform 17 specific work-related activities. To be found to have Limited Capability for Work (LCW), you need 15 points across all 17 activities combined. For the Support Group (LCWRA in Universal Credit), you need to meet at least one Support Group route, which is separate from the points total.
Which WCA Activities Does CRPS Affect?
CRPS can affect several of the 17 WCA activities at once, because a single painful, swollen and hypersensitive limb interferes with almost every physical task. The activities to focus on are:
- Manual dexterity - if CRPS affects a hand or arm, gripping a pen, using a keyboard, turning a tap or doing up buttons can be impossible or too painful to sustain
- Reaching - lifting or extending the affected arm above shoulder or to the side can be barely possible or trigger a flare
- Picking up and moving - lifting and carrying even light objects such as a half-litre carton can be unmanageable with an affected upper limb
- Mobilising - if a foot or leg is affected, walking any distance, or repeating it without a flare-up, can be severely limited even with a stick or crutch
- Standing and sitting - constant pain can make it impossible to stay in one position and move to another for any length of time
- Initiating and completing personal action - severe pain and the fatigue and brain fog that come with it can stop you starting and finishing everyday tasks reliably
Remember, points from ALL activities are added together. Scoring on manual dexterity, reaching and picking up alone can take you past 15 points, and physical and mental descriptors add together.
How CRPS Maps to the WCA Descriptors
The WCA scores each of the 17 activities separately, but only the single highest descriptor you meet in each activity counts. Here is how CRPS typically maps across the relevant activities:
- Manual dexterity (Activity 5): if you cannot use a pen or pencil, or cannot use a suitable keyboard or mouse with either hand because of pain in the affected limb, that can score 9 or 15 points on its own. Being unable to do up small buttons or turn the pages of a book with either hand scores points too.
- Reaching (Activity 3): being unable to raise either arm to top-pocket height, or as if to put something in the top pocket of a coat or jacket, scores points where an upper-limb CRPS limits movement.
- Picking up and moving (Activity 4): being unable to pick up and move a 0.5 litre carton of liquid, or a one-litre carton, with either hand attracts points for an affected arm or hand.
- Mobilising (Activity 1): for lower-limb CRPS, being unable to mobilise more than 50 or 100 metres on level ground without stopping, or repeatedly, can score from 9 up to 15 points.
- Standing and sitting (Activity 2): being unable to move between standing and sitting and stay at a workstation can add further points.
For a full breakdown of the points attached to each level, see our WCA descriptors explained guide and the individual activity pages it links to.
Good Days, Bad Days and the Reliability Test
CRPS pain rarely stays the same. It flares, settles and flares again, and using the affected limb on a good day can leave you unable to use it for hours or days afterwards. This is exactly what the WCA's reliability test is for.
To be counted as able to do an activity, you must be able to do it reliably, repeatedly, safely and within a reasonable time, for the majority of the time. If you can grip a pen once but the pain then makes your hand unusable for the rest of the day, you cannot do it repeatedly. If walking 100 metres triggers a flare that stops you walking again, you cannot do it reliably. The assessment should be based on your typical bad day, not your best one.
How to Describe CRPS on the ESA50/UC50 Form
The biggest mistake claimants with CRPS make is describing their condition in medical terms rather than work-related terms. The WCA does not care about your diagnosis - it cares about what you cannot do reliably, repeatedly and safely in a workplace context.
When completing your ESA50 or UC50 form for CRPS, take each relevant activity in turn and explain what happens when you try the task. Do not just write "CRPS in my right hand" - write that you cannot grip a pen for more than a few seconds before the burning pain forces you to stop, that the lightest touch on the limb is unbearable, and that a flare can leave the limb swollen and useless for the rest of the day. Always picture an 8-hour working day, 5 days a week.
If you have a phone or video assessment, our guide on what to say at your WCA assessment and the phone assessment walkthrough explain how to put this across clearly under pressure.
Support Group (LCWRA) for CRPS
The Support Group, called LCWRA in Universal Credit, is for people whose health means they should not have to prepare for work at all. It is reached in one of three ways, not through the 15-point total:
- A Schedule 3 descriptor - for example, if you cannot mobilise more than 50 metres without stopping because of significant discomfort, or cannot use either hand for the manual dexterity tasks at the top level.
- A single activity scoring 15 points - severe lower-limb or upper-limb CRPS can reach the top descriptor in one activity on its own.
- The substantial-risk rule - under Regulation 35 of the ESA Regulations (Regulation 40 in Universal Credit), if being found capable of work or work-related activity would put your physical or mental health at substantial risk, you can be placed in the Support Group even without enough descriptor points.
The substantial-risk route can be important where uncontrolled pain, the side effects of strong opioid or nerve medication, or the risk of worsening the limb make work preparation genuinely harmful. Read our detailed guides on the substantial-risk rule and how to qualify for the Support Group, and ask your pain clinic or GP to set out the risk in writing.
How much could your ESA be worth?
The amount depends on whether you reach the 15-point threshold for Limited Capability for Work, and whether you qualify for the Support Group (LCWRA). As a rough starting point, enter your main condition below to see the kind of figure a successful claim can reach. It is only an estimate - your real award depends on how the Work Capability Assessment scores your difficulties across the 17 activities.
What could your ESA be worth?
For the official figures, see our free WCA points calculator and what ESA is and how much it pays.
Evidence to Support Your Claim
Strong evidence is crucial for a successful WCA. For CRPS, gather:
- Pain clinic, rheumatology or neurology letters confirming the diagnosis and how it affects your ability to work
- Prescription records showing strong painkillers, nerve medication such as gabapentin or pregabalin, and any side effects that affect function
- Fit notes or med3 certificates
- Hospital, physiotherapy or occupational therapy appointment records
- A personal diary showing how the affected limb and pain levels vary day to day
Ask your clinician to specifically mention how CRPS affects your ability to perform work-related tasks - gripping, reaching, lifting, walking and concentrating - not just the medical diagnosis itself. Our guide on the ESA medical evidence letter shows what to ask for, and the evidence checklist helps you make sure nothing is missing.
Get your WCA50 form wording right
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Try one activity free →Tips for Your WCA with CRPS
- Always describe limitations in work-related terms, not just medical symptoms
- Name the affected limb and explain which hand or leg the descriptor applies to
- Think about reliability - can you do each activity consistently, every day, for a full working day, without triggering a flare?
- Mention medication side effects such as drowsiness, dizziness or poor concentration and how they affect function
- Describe touch and temperature sensitivity, because being unable to tolerate contact with an object is itself a barrier to many tasks
- Describe your worst typical day, not your best
- Get supporting evidence that specifically mentions work-related limitations
What if You're Rejected?
Around 2 in 3 ESA mandatory reconsiderations result in a changed decision. If you score 0 points or are placed in the wrong group, you should challenge the decision. The most common reason for failure is not describing limitations in work-related terms - which is exactly what ESAexpert helps you with.
Read our guide on ESA mandatory reconsideration for step-by-step instructions, and the ESA tribunal guide if you need to take it further.
Official sources
This guide reflects the official Work Capability Assessment rules. For the source material, see:
- GOV.UK - Employment and Support Allowance
- GOV.UK - Health conditions, disability and Universal Credit
- The Employment and Support Allowance Regulations 2013 (Schedule 2 - WCA descriptors)
- Citizens Advice - Employment and Support Allowance
Guidance only, not legal advice. Rules can change - always check GOV.UK for the latest.
Frequently Asked Questions
Can you get ESA for Complex Regional Pain Syndrome (CRPS)?
Yes, you can claim ESA or Universal Credit on the grounds of CRPS, but there is no automatic award for the diagnosis. The Work Capability Assessment looks at how CRPS affects your ability to carry out 17 work-related activities, so a successful claim depends on showing that severe limb pain, swelling, temperature and skin changes and extreme sensitivity to touch limit what you can do reliably, repeatedly and safely.
How many WCA points can CRPS score?
CRPS can score across several activities, most often manual dexterity, reaching, picking up and moving, mobilising and standing and sitting, with extra points for pain-driven poor concentration. You need 15 points in total across all 17 activities to be found to have Limited Capability for Work, physical and mental points are added together, and only the single highest-scoring descriptor in each activity counts towards your total.
How do I qualify for the Support Group with CRPS?
The Support Group (LCWRA in Universal Credit) is separate from the 15-point test. You can reach it by meeting a Schedule 3 descriptor, by scoring 15 points on a single activity such as mobilising or manual dexterity, or through the substantial-risk rule if work or work-related activity would put your health at substantial risk. A pain clinic or GP letter that explains this risk in writing carries real weight with the decision maker.
How should I describe CRPS pain and sensitivity on the ESA50 form?
Describe what you cannot do rather than listing your diagnosis, and frame it around an eight-hour working day, five days a week. Explain that the affected limb may be barely usable, that light touch or temperature change triggers severe pain, and how flare-ups leave you unable to repeat a task. The assessment is based on what you can do the majority of the time, so make clear that bad days happen more than half the time if that is your reality.
What does the reliability test mean for a fluctuating condition like CRPS?
To be counted as able to do an activity you must be able to do it reliably, repeatedly, safely and in a reasonable time, for the majority of the time. Because CRPS pain fluctuates and flares, you should be assessed on your typical bad days, not your best ones. If using the limb once triggers a flare that leaves you unable to repeat the task, or you can only manage it occasionally, you should be treated as unable to do it.
What evidence helps a CRPS ESA claim?
Useful evidence includes pain clinic, rheumatology or neurology letters that link CRPS to specific work-related limitations, prescription records showing strong painkillers, nerve medication and their side effects, fit notes, hospital and physiotherapy records, and a personal diary tracking how the limb varies day to day. Ask your clinician to describe the functional impact on tasks rather than simply confirming the diagnosis.
What if my ESA claim for CRPS is refused?
If you score too few points or are placed in the wrong group, you can challenge the decision by asking for a Mandatory Reconsideration, and then appealing to an independent First-tier Tribunal if it is still refused. The most common reason claims fail is describing the condition in medical terms instead of work-related terms, so a reconsideration is often where a weak first application can be turned around.