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Associated features of bipolar disorder

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The associated features of bipolar disorder are clinical phenomena that often accompany bipolar disorder (BD) but are not part of the diagnostic criteria for the disorder. There are several childhood precursors in children who later receive a diagnosis of bipolar disorder. They may show subtle early traits such as mood abnormalities, full major depressive episodes, and ADHD.[1] BD is also accompanied by changes in cognition processes and abilities. This include reduced attentional and executive capabilities and impaired memory. How the individual processes the world also depends on the phase of the disorder, with differential characteristics between the manic, hypomanic and depressive states.[2] Some studies have found a significant association between bipolar disorder and creativity.[3]

Childhood precursorsEdit

Some limited long-term studies indicate that children who later receive a diagnosis of bipolar disorder may show subtle early traits such as subthreshold cyclical mood abnormalities, full major depressive episodes, and possibly ADHD with mood fluctuation. There may be hypersensitivity and irritability. There is some disagreement whether the experiences are necessarily fluctuating or may be chronic.[4] Having parents with bipolar disorder is associated with increased risk of psychiatric disorders.[5] A history of stimulant use in childhood is found in high numbers of bipolar patients and has been found to cause an earlier onset of bipolar disorder and a worse clinical course, independent of attention deficit hyperactivity disorder.[6][7][8]

Cognitive functioningEdit

Further information: Creativity and mental illness

Reviews have indicated that most individuals diagnosed with bipolar disorder, but who are euthymic (not experiencing major depression or mania), do not show neuropsychological deficits on most tests.[2] Meta-analyses have indicated, by averaging the variable findings of many studies, cognitive deficits on some measures of sustained attention, executive function and verbal memory, in terms of group averages. On some tests, functioning is superior; however,[2] and sub-threshold mood states and psychiatric medications may account for some deficits.[9][10] A 2010 study found that "excellent performance" at school at age 15–16 was associated in males with a higher rate of developing bipolar disorder, but so was the poorest performance.[11] A 2005 study of young adult males found that poor performance on visuospatial tasks was associated with a higher rate of developing bipolar disorder, but so was high performance in arithmetic reasoning.[12]

Psychological studies of bipolar disorder have examined the development of a wide range of both the core symptoms of psychomotor activation and related clusterings of depression/anxiety, increased hedonic tone, irritability/aggression and sometimes psychosis. The existing evidence has been described as patchy in terms of quality but converging in a consistent manner. The findings suggest that the period leading up to mania is often characterized by depression and anxiety at first, with isolated sub-clinical symptoms of mania such as increased energy and racing thoughts. The latter increase and lead to increased activity levels, the more so if there is disruption in circadian rhythms or goal attainment events. There is some indication that once mania has begun to develop, social stressors, including criticism from significant others, can further contribute. There are also indications that individuals may hold certain beliefs about themselves, their internal states, and their social world (including striving to meet high standards despite it causing distress) that may make them vulnerable during changing mood states in the face of relevant life events. In addition, subtle frontal-temporal and subcortical difficulties in some individuals, related to planning, emotional regulation and attentional control, may play a role. Symptoms are often subthreshold and likely continuous with normal experience. Once (hypo)mania has developed, there is an overall increase in activation levels and impulsivity. Negative social reactions or advice may be taken less notice of, and a person may be more caught up in their own thoughts and interpretations, often along a theme of feeling criticised. There is some suggestion that the mood variation in bipolar disorder may not be cyclical as often assumed, nor completely random, but results from a complex interaction between internal and external variables unfolding over time; there is mixed evidence as to whether relevant life events are found more often in early than later episodes.[2] Many sufferers report inexplicably varied cyclical patterns, however.[13]

A series of authors have described mania or hypomania as being related to a high motivation to achieve, ambitious goal-setting, and sometimes high achievement. One study indicated that the pursuit of goals, encouraged by sometimes achieving them, can become emotionally dysregulated and involve the development of mania.[14] Individuals may have low self-esteem and difficulties in social adjustment, however, and by definition there are periods of depression with difficulty in motivation and functioning.[15]

Bipolar disorder has been associated with people involved in the arts but it is an ongoing question as to whether many creative geniuses had bipolar disorder.[16][17] Some studies have found a significant association between bipolar disorder and creativity, although it is unclear in which direction the cause lies or whether both conditions are caused by a third unknown factor; temperament has been hypothesized to be one such factor.[3]

Self-medicationEdit

Often bipolar individuals are subject to self-medication with non-prescribed drugs such as alcohol, tobacco and other recreational drugs.[18][19]

There is some evidence that, although bipolar patients in general do not appear to smoke significantly more than other people, the subset of bipolar patients with a history of psychosis may smoke more heavily than the general population.[20]

ReferencesEdit

  1. Andreoli TE (August 1989). Molecular aspects of endocrinology. Hosp. Pract. (Off. Ed.) 24 (8): 11–2.
  2. 2.0 2.1 2.2 2.3 Mansell W, Pedley R (March 2008). The ascent into mania: A review of psychological processes associated with the development of manic symptoms. Clinical Psychology Review 28 (3): 494–520.
  3. 3.0 3.1 Srivastava S, Ketter TA (December 2010). The link between bipolar disorders and creativity: evidence from personality and temperament studies. Curr Psychiatry Rep 12 (6): 522–30.
  4. David J. Miklowitz and Kiki D. Chan Prevention of Bipolar Disorder in At-Risk Children: Theoretical Assumptions and Empirical Foundations Dev Psychopathol. Dev Psychopathol. 2008; 20(3): 881–897. doi: 10.1017/S0954579408000424.
  5. Increased Risk Of Psychiatric Disorders." ScienceDaily 3 March 2009. 5 December 2010 <http://www.sciencedaily.com /releases/2009/03/090302183118.htm>
  6. Ross RG (July 2006). Psychotic and manic-like symptoms during stimulant treatment of attention deficit hyperactivity disorder. Am J Psychiatry 163 (7): 1149–52.
  7. DelBello MP, Soutullo CA, Hendricks W, Niemeier RT, McElroy SL, Strakowski SM (April 2001). Prior stimulant treatment in adolescents with bipolar disorder: association with age at onset. Bipolar Disord 3 (2): 53–7.
  8. Soutullo CA, DelBello MP, Ochsner JE (August 2002). Severity of bipolarity in hospitalized manic adolescents with history of stimulant or antidepressant treatment. J Affect Disord 70 (3): 323–7.
  9. Robinson LJ, Thompson JM, Gallagher P, et al. (July 2006). A meta-analysis of cognitive deficits in euthymic patients with bipolar disorder. Journal of Affective Disorders 93 (1-3): 105–15.
  10. Torres IJ, Boudreau VG, Yatham LN (2007). Neuropsychological functioning in euthymic bipolar disorder: a meta-analysis. Acta Psychiatrica Scandinavica 116 (434): 17–26.
  11. MacCabe JH, Lambe MP, Cnattingius S, et al. (February 2010). Excellent school performance at age 16 and risk of adult bipolar disorder: national cohort study. Br J Psychiatry 196 (2): 109–15.
  12. Tiihonen J, Haukka J, Henriksson M, et al. (October 2005). Premorbid intellectual functioning in bipolar disorder and schizophrenia: results from a cohort study of male conscripts. Am J Psychiatry 162 (10): 1904–10.
  13. Manic-depressive illness FK Goodwin, KR Jamison – 1990 – Oxford University Press New York
  14. Johnson SL (February 2005). Mania and dysregulation in goal pursuit: a review. Clin Psychol Rev 25 (2): 241–62.
  15. Blairy S, Linotte S, Souery D, et al. (April 2004). Social adjustment and self-esteem of bipolar patients: a multicentric study. J Affect Disord 79 (1–3): 97–103.
  16. Jamison, K R, Touched with Fire, Free Press, 1993, pp 83 ff.
  17. Goodwin, F, and Jamison, K R, Manic-Depressive Illness, Oxford University Press, 1990, p 353
  18. DOI:10.3109/10673229809000321
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  19. DOI:10.1016/S0165-0327(02)00454-8
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  20. PMID 11435266 (PMID 11435266)
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