paranoid personality disorder A personality disorder that is characterized by paranoia and a pervasive, long-standing suspiciousness and generalized mistrust of others. DOID:10938 ICD9CM:301.0 MSH:D010260 SNOMEDCT_2010_1_31:13601005 SNOMEDCT_2010_1_31:154896003 SNOMEDCT_2010_1_31:191750009 SNOMEDCT_2010_1_31:192485008 SNOMEDCT_2010_1_31:270529002 UMLS_CUI:C0030477 disease_ontology 301.0 MFOMD_0000042 People with this disorder show unwarranted suspiciousness, hypersensitivity, and reluctant to trust others. They interpret others' motives as being malevolent, question their loyalty or trustworthiness, persistently bear grudges, or are suspicious of the fidelity of their spouses. Many persons with this disorder fail to go for treatment because of their guardedness and mistrust. "Understanding abnormal behavior". David Sue, Derald Wing Sue, Stanley Sue. This disorder may be first apparent in childhood and adolescence with solitariness, poor peer relationships, social anxiety, underachievement in school, hypersensitivity, peculiar thoughts and language, and idiosyncratic fantasies. These children may appear to be "odd: or "eccentric" and attract teasing. DSM-IV-TR (american Psychiatric Association) F60.0 Pattern of distrust and suspiciousness such that others' motives are interpreted as malevolent. DSM-IV-TR (american Psychiatric Association) trastorno paranoide de la personalidad personality disorder