i am sorry life is so very hard for you.
The DMD i read about seems to have little to do with dissociation but...i am a clueless non doctor. i think here in the USA you might be diagnosed with DMD and something else. The different sites for the DMD are part of muscular dystrophy. Here they have support groups and stuff. Perhaps you can contact the Muscular Dystrophy foundation via email or computer and find some support. Even if you do have a mental issue too, certainly those suffering with the various forms muscular dystrophy have mental struggles too.
i may be all wrong. Forgive me. i just wanted to help you in some way. Even if in a tiny way.