We’ve discussed some of the more popular personality disorders under the DSM-IV before. However, excluded from that list are some diagnoses that for some (Millon) are considered valid, but since they were excluded or deleted from the DSM definition, do not have a concrete diagonistic criteria.
When subjects do not readily fit into the formally clustered disorders, a differential diagnosis of “not specified” may be offered. This may have referred to personalities that fall within the following types. These types of disorders are also referred to as categories requiring further study.
- Depressive personality disorder – is a pervasive pattern of depressive cognitions and behaviors beginning by early adulthood.
- Passive-aggressive personality disorder (negativististic personality disorder) – is a pattern of negative attitudes and passive resistance in interpersonal situations.
- Sadistic personality disorder – is a pervasive pattern of cruel, demeaning and aggressive behavior.
- Self-defeating personality disorder (masochistic personality disorder) – is characterised by behaviour consequently undermining the person’s pleasure and goals.
What we can see from the examples provided is how subjective the diagnoses can be, especially when no specified concrete and agreed criteria is prevalent. However it is the goal of future diagnostic query to find more statistically valid bases for classifying personality disorders.