leprophobia

noun2

1. •
   An irrationally excessive fear of Hansen's disease (leprosy) and lepers.

   • I therefore entreat you to beware of the lepro-phobia that appears to be coming upon us. — 1889
2. •
   Deep-seated loathing or hatred of lepers.

   • Do not treat for leprosy unless the diagnosis is established. Nothing is harder to cure than leprophobia. — 1973