Personality Disorder NOS (not otherwise specified) are reserved for those disorders that do not fit into the other personality disorder categories. Individuals who exhibit features of more than one personality disorder but without the criteria of any single disorder are usually placed under this category. Disorders under this category include the following:

Passive aggressive personality disorder

Depressive personality disorder

Types of Personality Disorder NOS:

Passive aggressive personality disorder: This is one of the most controversial of personality disorders as the reliability and validity of this diagnosis is limited. An underlying cause for this may be that it is more of a situational reaction rather than a personality trait, occurring particularly in situations where the person resents being confined and having to follow various rules and regulations. Individuals with this disorder show a pervasive pattern of passive resistance to demands in social or work situations. They also show a strong pattern of negativistic attitudes unrelated to any concurrent diagnosis of major depression or dysthymia. Their passive resistance to demands is shown in many ways ranging from simple resistance to fulfilling routine tasks to being sullen or argumentative or alternating between defiance and submission. They commonly complain of being misunderstood and unappreciated and at the same time may be highly critical or scornful of authority. These individuals also complain about their personal misfortunes and are envious of others who appear more fortunate.

Depressive personality Disorder:

Individuals with this disorder show a pattern of depressive cognitions and behaviors that begin by early adulthood and are pervasive in nature. Their usual mood state is one of unhappiness or dejection and they tend to feel inadequate, worthless or guilty. They tend to be highly self critical and may be judgmental towards others as well. These individuals are pessimistic and prone to worry. Although, the emphasis here is more on distorted cognitions and interpersonal traits than is true for dysthymic disorder, many questions remain about the validity of the distinction between these two diagnoses. Depressive personality disorder is distinct and most patients diagnosed with it do not meet the criteria for dysthymia.