When I made my claim I put that I have HMS/EDS hypermobility type and included info about them being considered to be the same, with the same problems and same treatment plans etc. I don't think that you getting help would mean that you can't get DLA. I had help from the OT before I got DLA, and I think it would actually look better that you have tried to make your life better, but that there are things that you still need actual help with, rather than being able to cure it all with aids and adaptations. One thing that you must consider is that this is not a fast process, so any help you can get now to make your life slightly better - or that of your carer - is a bonus! My having a raised toilet seat helps my hubby as he has to lift me off the toilet, so it is better for his back that he doesn't have to lift from as low, same with the sofa raiser that I have been given. OT also advise on how to do things, both for you and your carer. Mine also put hubby in touch with a local carers organisation so that he gets some help and support.
Finally diagnosed March 2011 after 20 years of hypochondria!!!