Hi waterfall2024
You are allowed to have a holiday and still claim PIP. It's hard to advise exactly what you might say, but I would emphasise that you went on the advice of your doctor and therefore for medical reasons. If the trip didn't make much difference, then you should say so (and I assume it didn't if you are still housebound.}
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
