Paranoid Personality Disorder is characterized as follows by the World Health Organization
At least three of the following:
excessive sensitivity to setbacks and rebuffs;
tendency to bear grudges persistently, i.e. refusal to forgive insults and injuries or slights;
suspiciousness and a pervasive tendency to distort experience by misconstruing the neutral or friendly actions of others as hostile or contemptuous;
a combative and tenacious sense of personal rights out of keeping with the actual situation;
recurrent suspicions, without justification, regarding sexual fidelity of spouse or sexual partner;
tendency to experience excessive self-importance, manifest in a persistent self-referential attitude;
preoccupation with unsubstantiated “conspiratorial” explanations of events both immediate to the patient and in the world at large.
Includes: expansive paranoid, fanatic, querulant and sensitive paranoid personality (disorder)
Excludes: delusional disorder, schizophrenia