The DMV will have an appeals process you have to go through. I did a search and couldn't find it online (although ti is probably buried there somewhere) but you will have to complete their appeal process before you can bring a lawsuit or the judge will dismiss the case based on "failure to exhaust all administrative remedies".
My suggestion is to hire a lawyer now and let them complete the process so they can set it up for the eventual lawsuit. It almost seems like a civil rights
violation if your condition is sufficient to qualify as a "disability" under federal and state law.
Look for a lawyer who does "driver's license suspension", "administrative law", or DWI defense, since it is the same type of procedures.
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