Paranoid personality disorder (PPD)

Paranoid personality disorder (PPD) is a mental disorder characterized by paranoia and a pervasive, long-standing suspiciousness and generalized mistrust of others. Individuals with this personality disorder
may be hypersensitive, easily insulted, and habitually relate to the
world by vigilant scanning of the environment for clues or suggestions
that may validate their fears or biases. Paranoid individuals are eager
observers. They think they are in danger and look for signs and threats
of that danger, potentially not appreciating other evidence.

They tend to be guarded and suspicious and have quite constricted
emotional lives. Their reduced capacity for meaningful emotional
involvement and the general pattern of isolated withdrawal often lend a quality of schizoid isolation to their life experience. People with PPD may have a tendency to bear grudges, suspiciousness,
tendency to interpret others’ actions as hostile, persistent tendency to
self-reference, or a tenacious sense of personal right. Patients with this disorder can also have significant comorbidity with other personality disorders.