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 (i.e. the American colloquial phrase, "Everyone is out to get me").
In delusional disorder, mood symptoms tend to be brief or absent, and unlike schizophrenia, delusions are non-bizarre and hallucinations are minimal or absent.  Interviews are important tools to obtain information about the patient's life situation and past history to help make a diagnosis.
Per paranoia si intende una psicosi caratterizzata da un delirio cronico, basato su un sistema di convinzioni, principalmente a tema persecutorio, non corrispondenti alla realtà. Questo sistema di convinzioni si manifesta sovente nel contesto di capacità cognitive e razionali altrimenti integre.
Borderline personality disorder (BPD), also known as emotionally unstable personality disorder (EUPD), is a mental illness characterized by a long-term pattern of unstable relationships, distorted sense of self, and strong emotional reactions. Those affected often [quantify] engage in self-harm and other dangerous behavior.