The prevalence of bipolar disorder is 1.4 percent in high-income countries, compared with 0.7 percent in low-income countries. Individuals who are separated, divorced, or widowed have higher rates of bipolar disorder than those who are married or have never been married.
Overall, the 12-month prevalence of bipolar disorders in the United States is 1.8 percent. The lifetime male-to-female prevalence ratio is 1.1:1.

SSRIs do not have pronounced withdrawal symptoms when compared to the other possible answers. Substances that have pronounced withdrawal symptoms include alcohol, benzodiazepines, and opiates.

For non-psychiatric disorders, the PMHNP should refer the client to a primary care provider. Although the PMHNP is legally able to provide some primary care, the standard of care is to make a referral.

Providing information to prepare a patient or family for expected changes is an example of anticipatory guidance.
Administering vaccinations on schedule is an important healthy action but not anticipatory guidance. Screenings for depression during well-visits are for current symptoms. Providing medication boxes is a current action to increase compliance with medication at the current time.

The correct diagnosis for the 25-year-old woman described in the scenario is **dissociative identity disorder (DID)**. This decision is based on several key symptoms and historical factors she presents, which align closely with the characteristics of DID.
Dissociative identity disorder is a severe form of dissociation, a mental process which produces a lack of connection in a person's thoughts, memory, and sense of identity. DID is formerly known as multiple personality disorder. The American Psychiatric Association's Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5) characterizes DID by the presence of two or more distinct personality states or an experience of possession, and changes in affected individuals' identity. This condition is associated with overwhelming experiences, traumatic events, and/or abuse occurring in childhood.
The symptoms of DID result from a complex psychological mechanism used as a coping strategy by individuals to dissociate themselves from a traumatic experience. The dissociative aspect is essentially a way to protect the individual from the full impact of the trauma. Common symptoms include memory loss (amnesia) of certain time periods, events, and people; mental health issues like depression, anxiety, and suicidal thoughts or attempts; a sense of being detached from oneself; and the experience of multiple distinct identities.
In the case of the woman described, her history of sexual abuse from ages 6 to 10 is a significant traumatic event that correlates strongly with the development of DID. Her reports of having "lost time" and "out of body" experiences are indicative of dissociative episodes. Additionally, her roommates' observations of her doing things or saying things that she does not remember could suggest the presence of alternate identities or states taking control without her conscious awareness.
Testing and assessments by mental health professionals would focus on her history, symptoms, and possibly include structured interviews and diagnostic tools specifically designed to assess dissociative symptoms and disorders. Treatment for DID typically involves psychotherapy, with an emphasis on developing coping mechanisms to deal with the dissociative symptoms and integrating the separate identities into one primary identity.
Given this woman's symptoms and history, other diagnoses such as PTSD could be considered due to the presence of trauma; however, the specific dissociative symptoms like amnesia, identity confusion, and "out of body" experiences, alongside her traumatic history, fit more decisively with dissociative identity disorder. Other mental health disorders, such as acute crisis, body dysmorphic disorder, or other anxiety disorders, do not encompass the breadth of symptoms and historical factors presented in this case.