Boomerangst
Technically, what goes around comes around. Boomerangst is he terror that the Baby Boom generation experiences at the reality of getting old; specifically the difficulty identifying their status as 'retired' or asking for any sort of 'Senior' discount. It begins at age 50 when AARP mails out a membership card and culminates in signing up for Medicare at 65.
He agonized over his increasing hair loss with his therapist, who noted 'boomerangst' in his notes