DLA to PIPs

My eldest son has learning difficulties and mental health problems but he just seems to disappear off the radar when it comes to him being considered for help. Classifying him has been so difficult, a psychiatrist once told him he slips in between the criteria for mental health, so he cannot get any support. On the other hand he does not want to be classified as anything other than a normal person and it is just recently that this need of him not to be discriminated against has turned against him regarding the shift from DLA to PIP. The crux of the matter is he refuses to fill in the form and state that he went to a special school, spent 3 months at a psychiatric and was once assessed for a kind of care in the community. He has also lived at Carr Gom. My problem is that I feel all alone in this and feel sick that the small amount of money he received from DLA will be taken off him. The money just makes his life bearable but i am afraid if he loses his low rate DLA his life with be changed irrecoverably. I if anyone had any advice? I have so many questions I can't fit here.

You are right in your belief that adding those bits of information will help his claim. Leaving out vital details like this may well be to his detriment. However how to persuade him of this I cannot say. Perhaps other member will have suggestions. But for what its worth you can tell him that as an experienced welfare rights worker not filling in his form with sufficient detail may be disadvantageous to him financially.