Psychotic disorder characterized by delusions and irrational mistrust of others leading up to false accusations and attitudes

Paranoia is an instinct or thought process which is believed to be heavily influenced by anxiety or fear, often to the point of delusion and irrationality. Paranoid thinking typically includes persecutory beliefs, or beliefs of conspiracy concerning a perceived threat towards oneself. Paranoia is distinct from phobias, which also involve irrational fear, but usually no blame.