Hi Jacqueline
No you don't have to be diagnosed again, but if you have any new supporting medical evidence you would be wise to include it on your form.
You can read how to fill in your form here
www.benefitsandwork.co.uk/help-for-claim...ip-award-review-form Even if your condition has not changed, make sure that you put in at least a couple of sentences in each box summarising the difficulties you still have.
BIS