What other benefits could my son claim?

hi I have a son who suffers from aspergus syndrome, he was claiming JSA, but last year he started suffering severe anxiety attacks and found it increasingly difficult to attend the job centre, as a result we have had to change his benefits from JSA TO ESA  it has helped him as he no longer has to attend the job centre but we are financially approx. 60 ponds down a fortnight, we are still waiting to see if my son is entitled to PIP, is there any other benefit's he could claim  in the mean time