disability living allowance? get the psych to say you have it, get the forms and fill them in, remember they are looking for reasons for why you cant work and also looking at reasons why you have a disability, at the same time i would suggest income support as well, there is a medical interview with the dla under the dwp rules, they just want their own doc to have a look at you, its not a strict session, so dont worry about it, may take upto six months but makes life a lot easier, fill in the forms putting down what the effects of your ptsd are, even the seemingly trivial ones, the forms are no place to be modest, they want to see whats wrong with you, so stick whatever is a prob on the paper.