3. Attenuated psychosis syndrome: This syndrome is characterized by psychotic-like symptoms that are below a threshold for full psychosis (e.g., the symptoms are less severe and more transient, and insight is relatively maintained).
4. Deiusionai symptoms in partner of individual with delusionai disorder: In the context of a relationship, the delusional material from the dominant partner provides content for delusional belief by the individual who may not otherwise entirely meet cri- teria for delusional disorder.
298.9 (F29)
This category applies to presentations in which symptoms characteristic of a schizophre— pairment in social, occupational. or other important areas of functioning predominate but do not meet the full criteria for any of the disorders in the schizophrenia spectrum and oth- er psychotic disorders diagnostic class. The unspecified schizophrenia spectrum and oth- er psychotic disorder category is used in situations in which the clinician chooses not to specify the reason that the criteria are not met for a specific schizophrenia spectrum and other psychotic disorder, and includes presentations in which there is insufficient informa- tion to make a more specific diagnosis (e.g., in emergency room settings).
Bl polar and related disorders are separated from the depressive disorders in
DSM-5 and placed between the chapters on schizophrenia spectrum and other psychotic disorders and depressive disorders in recognition of their place as a bridge between the two diagnostic classes in terms of symptomatology, family history, and genetics. The di- agnoses included in this chapter are bipolar I disorder, bipolar II disorder, cyclothymic disorder, substance/medication—induced bipolar and related disorder, bipolar and relat- ed disorder dueto another medical condition, other specified bipolar and related disor- der, and unspecified bipolar and related disorder.
The bipolar I disorder criteria represent the modern understanding of the classic manic-depressive disorder or affective psychosis described in the nineteenth century, dif- fering from that classic description only to the extent that neither psychosis nor the lifetime experience of a major depressive episode is a requirement. However, the vast majority of individuals whose symptoms meet the criteria for a fully syndromal manic episode also experience major depressive episodes during the course of their lives.
Bipolar II disorder, requiring the lifetime experience of at least one episode of major de- pression and at least one hypomanic episode, is no longer thought to be a "milder" condition than bipolar I disorder, largely because of the amount of time individuals with this con- dition spend in depression and because the instability of mood experienced by individuals with bipolar II disorder is typically accompanied by serious impairment in work and social functioning.
The diagnosis of cyclothymic disorder is given to adults who experience at least 2 years (for children, a full year) of both hypomanic and depressive periods without ever fulfilling the criteria for an episode of mania, hypomania, or major depression.
A large number of substances of abuse, some prescribed medications, and several medical conditions can be associated with manic-like phenomena. This fact is recognized in the diagnoses of substance/medication-induced bipolar and related disorder and bipo- lar and related disorder due to another medical condition.
The recognition that many individuals, particularly children and, to a lesser extent, ad- olescents, experience bipolar-like phenomena that do not meet the criteria for bipolar I, bi- polar II, or cyclothymic disorder is reflected in the availability of the other specified bipolar and related disorder category. Indeed, specific criteria for a disorder involving short—duration hypomania are provided in Section III in the hope of encouraging further study of this disorder.
For a diagnosis of bipolar l disorder, it is necessary to meet the following criteria for a manic episode. The manic episode may have been preceded by and may be followed by hypo- manic or major depressive episodes.