Two weeks later, in his apartment, after a couple of great dates, he revealed his other potentially deal-breaking issue: he is an avid follower of the rock group Phish. He has made pilgrimages to 183 of the band’s concerts since 1992, and attending the shows often means traveling, camping and following the group in much the same manner that fans pursued the Grateful Dead. “Tourette’s is a pain, but it doesn’t make life unbearable,” Ms. Miller said. “The Phish thing is far and away something more we have to negotiate than the Tourette’s.