The first in the series of personality disoders is Paranoid Personality Disorder (PPD). Although experiencing paranoia in a stressful situation is common, PPD refers to a much bigger idea; a permanent fear that someone or something is trying to cause you harm, and that you are in almost-constant danger.
A person with PPD will treat every experience, however neutral or friendly, as a personal attack and a sign of their “put-upon” status. They will feel like they always need to be on guard to defend themselves. Someone with PPD will struggle to trustanything, as they fear (or expect) that everything in their world could be revealed as a lie or trick at any moment. This uncertainty may drive someone with PPD towards anger and constant arguments with other people, who they assume are lying or hiding information. Alternately, the person may isolate themselves from the world and from others so they cannot be decieved.
To be diagnosed with PPD in the DSM-5, someone must meet 4 of these criteria;