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Commentary: patients' caregivers deserve our attention.

It is impossible to underestimate the extent to which bipolar disorder affects the family members and caregivers of our patients.

First of all, bipolar disorder has a strong genetic component. Up to 67% of children with at least one affected parent will go on to develop an affective disorder (Bipolar Disord. 2001;3:325-34; Bipolar Disord. 2006;8:710-20). In bipolar disorder, multiple neurotransmitter systems as well as the limbic corticostriatal systems are dysfunctional. The dysfunction of the latter is manifested by increased activity in the amygdala and decreased activity in frontal cortical regions (Annu. Rev. Clin. Psychol. 2006;199-235), which might impair the brain's capacity to regulate emotion. The extremely high prevalence of affective disorders in the children of affected parents might be attributable to this dysfunction.

Second, bipolar disorder affects the family members and caregivers of patients through the family environment. About 90% of family members of patients with bipolar disorder experience subjective burden (for example, feelings of emotional distress) that correlates with the severity of the patient's illness symptoms (Bipolar Disord. 2007;9:262-73). Family members with higher subjective burden are less likely to practice appropriate health behaviors and, as a result, are in poorer physical health than are family members of patients without mental illness.

Because of this high subjective burden and other factors such as objective (financial) burden, stigma, and turmoil in bipolar families, family members of patients with bipolar disorder exhibit high rates of depression, anxiety, and other psychiatric symptoms.

Also since these depressed or anxious family members usually appear in psychiatrists' offices in their caregiver roles for their relatives with bipolar disorder, their psychiatric disability is often either unappreciated or unnoticed by clinicians (Bipolar Disord. 2010;12:627-37).

This is unfortunate, because rates of psychiatric disability in family members of patients with bipolar disorder are high (J. Affect. Disord. 2010;121:10-21). Specifically, up to 40% of caregivers qualify for more than one current psychiatric diagnosis, while 60%-80% had at least one lifetime psychiatric diagnosis. Of note, nonbiological relatives had substantially higher rates of psychiatric disability than did biological relatives, indicating that partners of patients with bipolar disorder were more likely to have a familial mental illness themselves. This indicates that patients with bipolar disorder might tend to choose partners who also suffer from mental illness, a pattern known as assortative mating.

Most of the psychiatric diagnoses in caregivers reflect high levels of mood and anxiety symptoms. Depending on the study populations selected, 30%-40% of primary caregivers reported significant depressive symptoms or qualified tor a mood disorder (Bipolar Disord. 2005;7:126-36; Pam. Process 2002;41:645-57). Most of those diagnoses were major depressive disorder (69%), while 20% of caregivers qualified for a diagnosis on the bipolar spectrum (J. Affect. Disord. 2010;121:10-21).

The severity of depression in family members or caregivers might be related to either or both bipolar disorder severity and the stigma associated with it. In other words, family members' moods might fluctuate with that of the patient; they might be more depressed during acute episodes and find that their depression lifts between episodes.

Finally, 40%-60% of caregivers qualify for a diagnosis of generalized anxiety disorder; as with depression, the nonbiological relatives were more symptomatic than were the blood relatives, lending support to the theory of assortative mating.

Just as mood symptoms of bipolar disorder influence depression and anxiety levels in the family members of patients, the reverse is also true, and the symptom load in caregivers affects the course and the outcome of the illness in their relatives with bipolar disorder. Subjective burden and depression compromise caregivers' ability to effectively manage the demands associated with caregiving, which in turn leads to less favorable patient outcomes. In conclusion, rapidly accumulating evidence suggests that family members of patients with bipolar disorder experience high rates of depression, anxiety, and psychiatric distress in general. Because of their caregiving role with respect to the affected relative, their symptom level is not fully appreciated--and mental health needs often go unmet.

In practice, clinicians should directly inquire about and treat mood and anxiety symptoms in family members of their patients with bipolar disorder. New effective family interventions that target BOTH patients and caregivers using a family approach need to be developed and implemented.

Caption: DR. GALYNKER

Caption: MS. BRIGGS

BY IGOR GALYNKER, M.D., AND JESSICA BRIGGS

Dr. Galynker is founder and director of the Family Center for Bipolar, New York. He also serves as associate chairman of the department of psychiatry and behavioral sciences at the Beth Israel Medical Center, in New York. Ms. Briggs serves as program assistant at the Family Center for Bipolar. Scan the QR code to read more commentaries at clinicalpsychiattynews.com.
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Title Annotation:Perspectives
Author:Galynker, Igor; Briggs, Jessica
Publication:Clinical Psychiatry News
Date:Dec 1, 2013
Words:785
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