Hi Cloudy Skye,
I had my Work Capability Assessment in February. I assume that is the "ATOS interview" you're talking about. It's for Employment and Support Allowance, the new form of Incapacity Benefit, for those who cannot work. If your interview is for the new Personal Independence Payment, which is a benefit for those who have a disability but may be in work, then I know it's pretty similar.
The outcome of the WCA can lead to three different results. You could be put into the Support Group, which means you are unfit for work (or "have limited capability for work and for work-related activity" in their jargon).
You could be put in the Work-Related Activity Group, ("have limited capability for work") which means you have to attend a minimum of five sessions with someone at the JobCentre who is tasked with getting you ready for work. The main problem with the WRAG is part of the benefit (contribution-based ESA) ends after 12 months, whereas if you're in the Support Group, it continues indefinately. There is also a trial in one area of WRAG people having to see a health professional employed by ATOS who is tasked with getting them fit for work. I don't know where this trial is taking place, as the DWP won't tell us.
The final outcome of the WCA is you would be found fit for work and would be transferred to Job Seekers Allowance and would be required to look for work and attend the JobCentre.
The WCA is not a medical. The person doing the WCA may well not be a doctor, they can be a nurse or a physiotherapist. It is a series of questions about what you can and cannot do. They cover things like mobility, manual dexerity and only cover five physical areas.
You have to score the maximum points (usually 15) on at least one of these questions to get into the support group.
The outcome is not decided by the health professional who sees you. The decision will be made by someone with no medical training, at the DWP. By an absolute miracle, at my WCA I got a doctor who actually worked with Prof Jill Belch, one of the foremost experts in EM, so he knew EM very well. He even said I was not fit to work and should never be assessed again. However, the person at the DWP still put me in the WRAG. I appealed and won my case two weeks ago.
The problem for someone with EM is which of the questions they could qualify under. I'd strongly suggest going to this site which has a lot of useful resources, including the list of questions you'll be asked. Remember that you can only qualify under the physical descriptors, unless you have a mental health issue. So even if EM leaves you unable to get out of bed, you can't score points on that question because it comes under mental health descriptors.
I cannot emphasise enough that you must answer all the questions as if it were your worst day. If the person doing the examination asks you to stand, for example, you can tell them that it would hurt too much due to your EM. Telling that you can't do something, which you couldn't do when you're having a flare, even if at that precise moment you could is not lying. I certainly found the stress of the WCA made me flare anyway!
Do not do anything that could trigger your EM. Just explain that it would be too painful for you. Don't think that it's a normal physical examination and that you should battle on or just grin and bear it. If it would hurt you, tell them and don't do it.
Be very wary of questions like "what TV programmes do you watch?" when you're asked to describe your day. They could use your answer to say you can sit for at least 30 minutes, even if you actually watch it lying in bed. Some assessors try to catch people out, because they think that all benefits claimants are lying scroungers. Do not assume that the assessor is on your side, this isn't a normal medical. I can't stress that enough.
I'm sorry that I can't be more positive about the WCA. I don't want to stress you out. I just don't want you to go in to the WCA unprepared and end up being found fit for work.
If you can get a letter from your doctor, specifically stating something like:
"The above patient, cloudy skye, has erythromelalgia, a very rare disorder that causes her intense burning pain. Due to this, she is unable to mobilise 20 meters on level ground. I therefore advise that she be awarded 15 points on the mobility catagory of the Work Capability Assessment and be placed in the Support Group."
I've put a few websites with good articles on EM at the bottom. The Dermnet NZ is a site that doctors often use, I know this because my dad is a retired GP.
If the very worst happens and you don't get put in the Support Group or are even found fit for work, don't panic. Immediately appeal (contact me by PM if that happens) and you'll be put back on the assessment rate and won't have to look for work.
Good luck!
http://emedicine.medscape.com/article/200071-overview#showall
http://dermnetnz.org/vascular/erythromelalgia.html
http://www.ncbi.nlm.nih.gov/books/NBK1163/