Remember not being able to do a "task"/thing on form repeatedly or reliably (eg due to pain/fatigue) should be counted as not being able to do a task.
Also there are exceptional circumstances rules which basically say the assesment outcome should not be detrimental to your health. These special/ exceptional circumstances rules may apply to Lupus patients being put into the "work related activity group" of ESA if you do not generate enough "points on the form" to qualify automatically. and may even allow people to be put in the "support group" if you can prove " there would be a substantial risk to the mental or physical health of any person if the claimant were found not to have limited capability for work-related activity."
The link I posted sometimes fails it can be found on the direct gov web site http://www.direct.gov.uk
under money,tax and benefits, Ill or injured benefits, then Employment and Support Allowance Introduction page - There is then a option to click on
Employment and Support Allowance - Work Capability Assessment - This brings up the Work Capability Assesment page
Once on the work capability assesment page a further link can be found at the bottom of the page (under Further details)
eg page says
There is a very detailed guide to the Work Capability Assessment (ESA214) in PDF format. It is published by Jobcentre Plus and is aimed mainly at professionals, but you may find it useful. Because the information is detailed and technical, some of it can be quite hard to understand.
See the link 'Guide to Employment and Support Allowance - the Work Capability Assessment ESA214'.
Download 'A guide to ESA - the Work Capability Assessment ESA214' (PDF, 154K) Opens new window