Fregoli delusion
A rare mental disorder where a person believes that someone is changing forms into different people to spy on them.
Person 1 : why do you keep following me?!
Person 2 : I've never seen you before in my life!
(Person 1 tells therapist)
Therapist : you might have Fregoli delusion
Person 2 : I've never seen you before in my life!
(Person 1 tells therapist)
Therapist : you might have Fregoli delusion