Hopefully, someone will have had experience of this. Be aware though, it is not so much the condition, but the impact on your daily living and mobility as per the specific PIP criteria. I only mention it because two people may claim for PIP for the same condition, but the symptoms, impact on their life and the severity may vary and they land up with different awards or one gets an award and another gets rejected.
BIS
Nothing on this board constitutes legal advice - always consult a professional about specific problems
