*Individuals with paranoid schizophrenia and persecutory delusional disorder experience what is known as persecutory delusions: an irrational, yet unshakable, belief that someone or others are plotting against them. | *Individuals with paranoid schizophrenia and persecutory delusional disorder experience what is known as persecutory delusions: an irrational, yet unshakable, belief that someone or others are plotting against them. |