This research paper discusses found differences in MRI brain results between BID sufferers and non-BID sufferers.
This has given me a tremendous uplift in morale, and I have to keep telling myself mantras like "it's not your fault" and "it's a neurology problem" and "it's a sensory processing issue" (the last one isn't supported in the paper, but if it helps me, it might help one of you).
https://pmc.ncbi.nlm.nih.gov/articles/PMC5104450/](url)