Gilly
I can see nothing in the PIP or Carers Allowance legislation that would preclude you from receiving both benefits together, however, the fact that you are providing care to your son will be taken into account when you are assessed, as an example if you stated that you could not prepare a meal for yourself but are known to provide a cooked meal for your son everyday, then this would likely cause problems.
Gordon
Nothing on this board constitutes legal advice - always consult a professional about specific problems 
