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The causes of bipolar disorder likely vary between individuals and the exact mechanism underlying the disorder remains unclear. [50] Genetic influences are believed to account for 73–93% of the risk of developing the disorder indicating a strong hereditary component. [9] The overall heritability of the bipolar spectrum has been estimated at 0 ...
Mania is a prominent symptom of both bipolar disorder and Bell's mania. Hence, studying bipolar patients can provide insight into the pathophysiology of this Bell's mania. PET scans of manic patients illustrate anomalous activation of the dorsal anterior cingulate, right inferior frontal cortical regions. [6]
Bipolar disorder is an affective disorder characterized by periods of elevated and depressed mood. The cause and mechanism of bipolar disorder is not yet known, and the study of its biological origins is ongoing. Although no single gene causes the disorder, a number of genes are linked to increase risk of the disorder, and various gene ...
The polar opposite of the manic side of bipolar disorder are the periods of depression, often severe or “major” depression that can cause significant problems at work, school, home and in ...
(2014.) “The prevalence and illness characteristics of DSM-5-defined ‘mixed feature specifier’ in adults with major depressive disorder and bipolar disorder: Results from the International ...
Sleep in bipolar disorder. Sleep is known to play an important role in the etiology and maintenance of bipolar disorder. [1] Patients with bipolar disorder often have a less stable and more variable circadian activity. [2] Circadian activity disruption can be apparent even if the person concerned is not currently ill. [3][4]
Bipolar disorder is defined by the NIMH as a "mental illness that causes unusual shifts in a person's mood, energy, activity levels, and concentration" that are more severe than the usual ups and ...
Bipolar II disorder (BP-II) is a mood disorder on the bipolar spectrum, characterized by at least one episode of hypomania and at least one episode of major depression. [1][2][3][4] Diagnosis for BP-II requires that the individual must never have experienced a full manic episode. [5] Otherwise, one manic episode meets the criteria for bipolar I ...