Hi, !
I am glad you decided to post here; I know it can take some determination to get over the hesitation to share personal stuff in spaces like this. I don't personally know of another community member dealing with the RRMS/Synesthesia/ADHD trifecta, but I do know that a university was doing some research on MS and Synethesia a few years back -- https://multiplesclerosis.net/forums/multiple-sclerosis-and-synesthesia. The survey is now closed and I don't know what came of their research. One of our former health leaders shared about her late diagnosis of ADHD and I thought you might find her piece worth the read (and there are a number of member comments following the piece) -- https://multiplesclerosis.net/living-with-ms/add-focus-symptoms. I do hope some community members see your post and chime in, especially if they can relate. I am sorry I can't offer any really helpful advice or commiseration, but, again, I am glad you took the time to share here!
Best, Erin, Team Member.