susieb
It's not the change in diagnosis that is important but whether your ability to complete the PIP activities has changed?
If they have and your problems are now worse, then the question you need to ask yourself is whether this will result in your scoring sufficient new points to increase your award.
If you report a change then be aware that it will result in a full reassessment of your claim, a new PIP2 and almost certainly a face to face assessment.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
