Prevalence Rate For Bipolar I Disorder

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Prevalence The lifetime prevalence rate for Bipolar I Disorder is 0.6% and the 12-month prevalence rate is 0.4% of the overall population (Merikangas et al, 2011). The United States had the highest reported lifetime prevalence of bipolar spectrum disorders with 4.4% and a 12-month prevalence of 2.8%. In addition, lifetime prevalence rates for bipolar I disorder were found to be slightly higher in males than in females. While much of the reported prevalence rates for bipolar disorder are based on adults 18 years and older, Merikangas et al. (2010) reported prevalence rates in the United States for adolescents including 3.3% for males and 2.6% for females. It was also reported that prevalence rates continue to steadily increase throughout…show more content…
In addition, episodes of depression and mania tend to be short and frequent around the time of onset and then lengthen over time with most people experiencing intermittent episodes throughout their lifetime (Angst & Sellaro, 2000). Since bipolar spectrum disorders are complex in nature, the overall treatment of this disorder tends to be difficult as nonadherence to treatment is common (Hilty, Leamon, Lim, Kelly, & Hales, 2006). There are also some gender differences experienced by those with bipolar disorder. Women tend experience bipolar disorder different from men. Nivoli et al. (2011) reported that in adult onset bipolar disorder, women generally experience an onset of depression and overall depressive predominance. In addition, they reported that women tend to experience a higher rate of psychotic features and suicidality associated with depression. However, men tend to experience higher rates of comorbid substance abuse and engage in more violent attempts of suicide. Youth with bipolar disorder tend to experience persistent disease well into their late adolescent years and adulthood (Wozniak et al, 2010). Individuals with childhood and adolescent onset as compared to adult onset, tend to be highly correlated with specific illness characteristics including more a severe course of disease, comorbid anxiety disorders, at least 10 additional lifetime mood episodes, substance use disorders, and
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