Whiff If you are going to a Social Security Tribunal then there will be people there who understand disability. The tribunal includes a doctor, someone who works in the sector and a lawyer with many years experience in the field.
How do I know this? I used to work with Age Concern (as was) as a home visitor, most of the work was benefits applications and I accompanied clients to a number of appeals. Also my closest friend, going back to school days, was for many years a tribunal chairman and became one of their most experienced and senior judges.
Going to an appeal you have an over 50% chance of success. The government has for years hated these tribunals because they do grant so many appeals. The government actually tried to abolish them at one point.
Take somebody with you, someone who knows you well, they cannot speak directly to the tribunal but they are good for jogging your memory if they think there is something you should be mentioning to the tribunal, that you haven't mentioned.
The actual tribunal process is not intimidating. It is usually in a small room with a big table and you and your companion sit one side and the assessors the on the other, their only purpose is to be clear about the problems, they can ask for more information about information on the form, but you cannot produce new evidence, for example any development in your condition since you filled the forms in. They also have to keep within the relevant law, even if they, personally, sympathise with your situation.
If you need any further information PM me.