This sort of mind-warping seems to be an occupational hazard of being a Starship captain. Between "The Inner Light," his Borg transformation, being temporarily turned into a kid, his Nexus hallucination, and his torture at the hands of the Gul Madred, Picard probably needs some seriously psychological counseling, too.
And let's not forget Sisko and his "Benny Russell" persona . . ..