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Bipolar II disorder (BP-II; pronounced "type two bipolar disorder") is a bipolar spectrum disorder characterized by at least one episode of hypomania and at least one episode of major depression.[1][2] Diagnosis for bipolar II disorder requires that the individual must never have experienced a full manic episode (one manic episode meets the criteria for bipolar I disorder).[2] Symptoms of mania and hypomania are similar, though mania is more severe and may precipitate psychosis. [1] The hypomanic episodes associated with bipolar II disorder must last for at least four days (see also History and Future Directions).[2][3] Commonly, depressive episodes are more frequent and more intense than hypomanic episodes.[2][4] Additionally, when compared to bipolar I disorder, type II presents more frequent depressive episodes and shorter intervals of well-being. [1][2] The course of bipolar II disorder is more chronic and consists of more frequent cycling than the course of bipolar I disorder.[1][5] Finally, bipolar II is associated with a greater risk of suicidal thoughts and behaviors than bipolar I or unipolar depression.[1][5] Although bipolar II is commonly perceived to be a milder form of Type I, this is not the case. Types I and II present equally severe burdens. [1][6]

Bipolar II is difficult to diagnose. Patients usually seek help when they are in a depressed state. Due to the fact the symptoms of hypomania are often mistaken for high functioning behavior or simply attributed to personality, patients are not aware of their hypomanic symptoms. As a result, they are unable to provide their doctor with all the information needed for an accurate assessment; these individuals are often misdiagnosed with unipolar depression.[1][2][5] Of all individuals initially diagnosed with major depressive disorder, between 40% and 50% will later be diagnosed with either BP-I or BP-II.[1] Substance abuse disorders (which have high comorbidity with BP-II) and periods of mixed depression may also make it more difficult to accurately identify BP-II.[2] Despite the difficulties, it is important that BP-II individuals are correctly assessed so that they can receive the proper treatment.[2] Antidepressant use, in the absence of mood stabilizers, is correlated with worsening BP-II symptoms.[1]

Signs and symptoms

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Hypomanic episodes

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Hypomania is characterized by euphoria and/or an irritable mood. In order for an episode to qualify as hypomanic, the individual must also present three or more of the following symptoms (see also History and Future Directions).[1][2]

  • Grandiosity
  • Decreased need for sleep
  • Increased talkativeness
  • Racing thoughts
  • Distractibility
  • Overactivity, especially in goal-directed areas
  • Psychomotor agitation
  • Excessive participation in risky behaviors, such as hypersexuality

It is important to distinguish between hypomania and mania. Mania is generally greater in severity and impairs function, sometimes leading to hospitalization. In contrast, hypomania usually increases functioning. For this reason, it is not uncommon for hypomania to go unnoticed. Often it is not until individuals are in a depressive episode that they seek treatment, and even then their history of hypomania may go undiagnosed. Even though hypomania may increase functioning, episodes need to be treated as because they may precipitate a depressive episode. [1][2]

Depressive episodes

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It is during depressive episodes that BP-II patients often seek help. Symptoms may be syndromal or subsyndromal.[1] Depressive symptoms may include:

  • Low energy levels
  • Cessation of usual activities
  • Black and white thinking
  • Unrealistic pessimism
  • Overgeneralization
  • Automatic thoughts
  • Maladaptive assumptions
  • Dysfunctional personal schemas[7]
  • Thoughts of suicide
  • Isolation from people

Evidence also suggests that BP-II is strongly associated with atypical depression. Essentially, this means that many BP-II patients exhibit [[reverse vegatative symptoms]]. This simply means BP-II patitents may have a tendency to oversleep and over eat, while typcially depressed patients sleep and eat less than usual.[1][5]

Mixed Depression

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Depressive mixed states occur when patients experience depression and non-eupohoric, usually subsyndromal, hypomania at the same time. As was mentioned previously, it is particularly difficult to diagnose BP-II when a patient is in this state.

In a mixed state, mood is depressed, but the following symptoms of hypomania present as well:

  • irratibility
  • mental overactivity
  • behavioral overactivity

Mixed states are associated with greater levels of suicidality than non-mixed depression. Antidepressants may increase this risk. [1][2]

Relapse

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In the case of a relapse, the following symptoms often occur and are considered early warning signs:[8]

  • Sleep disturbance: patient requires less sleep and does not feel tired
  • Racing thoughts and/or speech
  • Anxiety
  • Irritability
  • Emotional intensity
  • Spending more money than usual
  • Binge behavior, including food, drugs, or alcohol
  • Arguments with family members and friends
  • Taking on many projects at once

People with bipolar disorder may develop alternate identities to match each mood they experience. For some, this is done intentionally, as a means by which to escape trauma or pain from a depressive period, or simply to better organize one's life by setting boundaries for one's perceptions and behaviors.[9]

Studies indicate that the following events may also precipitate relapse in BP-II patients:[10]

  • Stressful life events
  • Relatives' criticism
  • Antidepressant use
  • Disrupted circadian rhythm

Causes

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There have been very few studies conducted to examine the possible causes of Bipolar II. Those that have been done have not considered Bipolar I and Bipolar II separately and have had inconclusive results. Researchers have found that patients with either Bipolar I or II may have increased levels of blood calcium concentrations but the results are inconclusive. The studies that have been conducted did not find a significant difference between those with Bipolar I or Bipolar II. There has been a study looking at genetics and Bipolar II disorder and the results are inconclusive; however, scientists did find that relatives of people with Bipolar II are more likely to develop the same bipolar disorder or major depression rather than developing Bipolar I disorder.[8]

Diagnosis

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The Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) recognizes two types of bipolar disorders—bipolar I and bipolar II. People with bipolar I disorder suffer from at least one manic or mixed episode, and may experience depressive episodes. On the contrary, as noted above, people with bipolar II disorder experience a milder form of a manic episode, known as a hypomanic episode as well as major depressive episodes. Although bipolar II is thought to be less severe than bipolar I in regards to symptom intensity, it is actually more severe and distressing with respect to episode frequency and overall course. Those with bipolar II often experience more frequent bouts of depressive episodes.[11] Specific criteria defined by the DSM-IV for a bipolar II diagnosis is as follows:

  • The presence of a hypomanic or major depressive episode.
  • If currently in major depressive episode, history of a hypomanic episode. If currently in a hypomanic episode, history of a major depressive episode. No history of a manic episode.
  • Significant stress or impairment in social, occupational, or other important areas of functioning.[12]

Studies have identified major differences between bipolar I and bipolar II in regards to their clinical features, comorbidity rates and family histories. According to Baek et al. (2011), during depressive episodes, bipolar II patients tend to show higher rates of psychomotor agitation, guilt, shame, suicide ideation, and suicide attempts. Bipolar II patients have shown higher lifetime comorbidity rates of DSM axis I diagnoses such as phobias, anxiety disorders, substance & alcohol abuse, and eating disorders and there is a higher correlation between bipolar II patients and family history of psychiatric illness, including major depression and substance-related disorders. The occurrence rate of psychiatric illness in first degree relatives of bipolar II patients was 26.5%, versus 15.4% in bipolar I patients.[11][13]

Screening instruments like the Mood Disorders Questionnaire (MDQ) are helpful tools in determining a patient's status on the bipolar spectrum and getting families involved can also improve chances of an accurate diagnosis and acknowledgment of hypomanic episodes. In addition, there are certain features that have been shown to increase the chances that depressed patients are suffering from a bipolar disorder including atypical symptoms of depression like hypersomnia and hyperphagia, a family history of bipolar disorder, medication-induced hypomania, recurrent or psychotic depression, antidepressant refractory depression, and early or postpartum depression.[13]

Treatments

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Treatment typically includes three things: the treatment of acute hypomania, the treatment of acute depression, and the prevention of the relapse of either hypomania or depression. The main goal is to avoid harm to the patient.[14]

Pharmaceutical therapies

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The most common treatment for reducing bipolar II disorder symptoms is medication, usually in the form of mood stabilizers. However, treatment with mood stabilizers may produce a flat affect in the patient, which is dose-dependent. Concurrent use of SSRI antidepressants may help some with bipolar II disorder, though these medications should be used with caution because it is believed that they may cause a hypomanic switch.[14]

The pharmaceutical management of bipolar II disorder is not generally supported by strong evidence, with limited randomised controlled trials (RCTs) published in the literature. Some medications used are:[14]

  • Lithium - There is strong evidence that lithium is effective in treating both the depressive and hypomanic symptoms in bipolar II. In addition, its action as a mood stabiliser can be used to decrease the risk of hypomanic switch in patients treated with antidepressants.
  • Anticonvulsants - there is evidence that lamotrigine decreases the risk of relapse in rapid cycling bipolar II. It appears to be more effective in bipolar II than bipolar I, suggesting that lamotrigine is more effective for the treatment of depressive rather than manic episodes. A large, multicentre trial comparing carbamazepine and lithium over two and a half years found that carbamazepine was superior in terms of preventing future episodes of bipolar II, although lithium was superior in individuals with bipolar I. There is also some evidence for the use of valproate and topiramate, although the results for the use of gabapentin have been disappointing.
  • Antidepressants - there is evidence to support the use of SSRI and SNRI antidepressants in bipolar II. Indeed, some sources consider them to be one of the first line treatments.[15] However, because of the perceived risk of antidepressants inducing a hypomanic switch, treatment is often combined with a mood stabiliser such as lithium.
  • Antipsychotics - there is good evidence for the use of quetiapine, and it has been approved by the FDA for this indication. There is also some evidence for the use of risperidone, although the relevant trial was not placebo controlled and was complicated by the use of other medications in some of the patients.
  • Dopamine agonists - there is evidence for the efficacy of pramipexole from one RCT.

Non-pharmaceutical therapies

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Non-pharmaceutical therapies can also help those with the illness. These include cognitive behavioral therapy (CBT), psychodynamic therapy, psychoanalysis, social rhythm therapy, interpersonal therapy, behavioral therapy, cognitive therapy, music therapy, psychoeducation, light therapy, and family-focused therapy. Relapse can still occur, even with continued medication and therapy.[16]

Prognosis

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There is evidence to suggest that Bipolar II Disorder has a more chronic course of illness than Bipolar I disorder.[17] This constant and pervasive course of the illness leads to an increased risk in suicide and more hypomanic and major depressive episodes with shorter periods of time between episodes than Bipolar I patients experience.[17] The natural course of Bipolar II Disorder, when left untreated, leads to patients spending the majority of their lives unwell with much of their suffering stemming from depression.[13] Their recurrent depression results in personal suffering and disability.[13] This disability can present itself in the form of psychosocial impairment, which has been suggested to be worse in Bipolar II patients than in Bipolar I patients.[18] Another facet of this illness that is associated with a poorer prognosis is rapid cycling, which denotes the occurrence of four or more Major Depressive, Hypomanic, and/or mixed episodes in a twelve-month period.[17] Rapid cycling is actually quite common in those with Bipolar II, much more so in women than in men (70% vs. 40%), and without treatment leads to added sources of disability and an increased risk of suicide.[13] In order to improve a patient’s prognosis, long term therapy is most favorably recommended for controlling symptoms, maintaining remission and preventing relapses.[19] With treatment, patients have been shown to present a decreased risk of suicide (especially when treated with lithium) and a reduction of frequency and severity of their episodes, which in turn moves them toward a stable life and reduces the time they spend ill.[20] In order to maintain their state of balance, therapy is often continued indefinitely, as around 50% of the patients who discontinue it relapse quickly and experience either full-blown episodes or sub-syndromal symptoms that bring significant functional impairments.[19]

Functioning

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The deficits in functioning associated with Bipolar II disorder stem mostly from the recurrent depression that Bipolar II patients suffer from. Depressive symptoms are much more disabling than hypomanic symptoms and are potentially as - or more - disabling than mania symptoms.[18] Functional impairment has been shown to be directly linked with increasing percentages of depressive symptoms, and because sub-syndromal symptoms are more common—and frequent—in Bipolar II disorder, they have been implicated heavily as a major cause of psychosocial disability.[13] There is evidence that shows the mild depressive symptoms, or even sub-syndromal symptoms, are responsible for the non-recovery of social functioning, which furthers the idea that residual depressive symptoms are detrimental for functional recovery in patients being treated for Bipolar II.[21] It has been suggested that symptom interference in relation to social and interpersonal relationships in Bipolar II Disorder is worse than symptom interference in other chronic medical illnesses such as cancer.[21] This social impairment can last for years, even after treatment that has resulted in a resolution of mood symptoms.[21]

The factors related to this persistent social impairment are residual depressive symptoms, limited illness insight (a very common occurrence in patients with Bipolar II Disorder), and impaired executive functioning.[21] Impaired ability in regards to executive functions is directly tied to poor psychosocial functioning, a common side-effect in patients with Bipolar II.[22]

The impact on a patient’s psychosocial functioning stems from the depressive symptoms (more common in Bipolar II than Bipolar I).[18] An increase in these symptoms’ severity seems to correlate with a significant increase in psychosocial disability.[22] Psychosocial disability can present itself in poor semantic memory, which in turn affects other cognitive domains like verbal memory and (as mentioned earlier) executive functioning leading to a direct and persisting impact on psychosocial functioning.[23]

An abnormal semantic memory organization can manipulate thoughts and lead to the formation of delusions and possibly affect speech and communication problems, which can lead to interpersonal issues.[23] Bipolar II patients have also been shown to present worse cognitive functioning than those patients with Bipolar I, though they demonstrate about the same disability when it comes to occupational functioning, interpersonal relationships, and autonomy.[22] This disruption in cognitive functioning takes a toll on their ability to function in the work place, which leads to high rates of work loss in Bipolar II patient populations.[18] After treatment and while in remission, Bipolar II patients tend to report a good psychosocial functioning but they still score less in that department than normal patients without the disorder.[13] These lasting impacts further suggest that a prolonged exposure to an untreated Bipolar II disorder can lead to permanent adverse effects on functioning.[21]

Recovery and recurrence

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Bipolar II Disorder has a chronic relapsing nature.[19] It has even been suggested that Bipolar II patients have a higher degree of relapse than Bipolar I patients .[17] Generally, within four years of an episode, around 60% of patients will relapse into another episode.[19] Some patients are even symptomatic half the time, either with full on episodes or symptoms that fall just below the threshold of an episode.[19]

Because of the nature of the illness, long-term therapy is the best option and aims to not only control the symptoms but to maintain sustained remission and prevent relapses from occurring.[19] Even with treatment, patients do not always regain full functioning, especially in the social realm .[21] There is a very clear gap between symptomatic recovery and full functional recovery, for both Bipolar I and Bipolar II patients.[22] As such, and because those with Bipolar II spend more time with depressive symptoms that do not quite qualify as a major depressive episode, the best chance for recovery is to have therapeutic interventions that focus on the residual depressive symptoms and to aim for improvement in psychosocial and cognitive functioning.[22] Even with treatment, a certain amount of responsibility is placed in the patient’s hands; they have to be able to assume responsibility for their illness by accepting their diagnosis, taking the required medication, and seeking help when needed to do well in the future.[24]

Treatment often lasts after remission is achieved, and the treatment that worked is continued during the continuation phase (lasting anywhere from 6–12 months) and maintenance can last 1–2 years or, in some cases, indefinitely.[25] One of the treatments of choice is Lithium, which has been shown to be very beneficial in reducing the frequency and severity of depressive episodes.[20] Lithium prevents mood relapse and works especially well in Bipolar II patients who experience rapid-cycling.[20] Almost all Bipolar II patients who take Lithium have a decrease in the amount of time they spend ill and a decrease in mood episodes.[20]

Along with medication, other forms of therapy have been shown to be beneficial for Bipolar II patients. A treatment called a "wellbeing plan" serves several purposes: it informs the patients, protects them from future episodes, teaches them to add value to their life, and works toward building a strong sense of self to fend off depression and reduce the desire to succumb to the seductive hypomanic highs.[24] The plan has to aim high. Otherwise, patients will relapse into depression.[24] A large part of this plan involves the patient being very aware of warning signs and stress triggers so that they take an active role in their recovery and prevention of relapse.[24]

Mortality

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Several studies have shown that the risk of suicide is higher in patients who suffer from Bipolar II than those who suffer from Bipolar I, and especially higher than patients who suffer from major depressive disorder.[13]

In results of a summary of several lifetime study experiments, it was found that 24% of Bipolar II patients experienced suicidal ideation or suicide attempts compared to 17% in Bipolar I patients and 12% in major depressive patients.[13][26] The risk of suicide for Bipolar II patients is especially high; as many as 50% of them will attempt suicide at least once.[27] Bipolar disorders, in general, are the 3rd leading cause of death in 15–24 year olds.[27] Bipolar II patients were also found to employ more lethal means and have more complete suicides over all.[13] They had a higher rate of suicide attempts with a higher risk for death rather than just suicidal gestures that weren’t necessarily lethal (like self-harm).[18]

Bipolar II patients have several risk factors that increase their risk of suicide. The illness is very recurrent and results in severe disabilities, interpersonal relationship problems, barriers to academic, financial, and vocational goals, and a loss of social standing in their community, all of which increase the likelihood of suicide.[28] Mixed symptoms and rapid-cycling, both very common in Bipolar II, are also associated with an increased risk of suicide.[13] The tendency for Bipolar II to be misdiagnosed and treated ineffectively, or not at all in some cases, also leads to an increased risk.[26]

As a result of the high suicide risk for this group, reducing the risk and preventing attempts remains a main part of the treatment; a combination of self-monitoring, close supervision by a therapist, and faithful adherence to their medication regimen will help to reduce the risk and prevent the likelihood of a completed suicide.[28]

Comorbid Conditions

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Comorbid conditions are extremely common in individuals with BP-II. In fact, individuals are twice as likely to present a comorbid disorder than not.[2] These include anxiety, eating, personality (cluster B), and substance use disorders.[2][5] For bipolar II disorder, the most conservative estimate of lifetime prevalence of alcohol or other drug abuse disorders is 20%. In patients with comorbid substance abuse disorder and BP-II, episodes have a longer duration and treatment compliance decreases. Preliminary studies suggest that comorbid substance abuse is also linked to increased risk of suicidality.[29]

History and Future Directions

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Historically, the first diagnostic distinction to be made between manic-depression involving mania, and that involving hypomania, came from Carl Gustav Jung in 1903.[30][31] In his paper, Jung introduced the non-psychotic version of the illness with the introductory statement, "I would like to publish a number of cases whose peculiarity consists in chronic hypomanic behaviour" where "it is not a question of real mania at all but of a hypomanic state which cannot be regarded as psychotic".[30][32] Jung illustrated the hypomanic variation with five case histories, each involving hypomanic behaviour, occasional bouts of depression, and mixed mood states, which involved personal and interpersonal upheaval for each patient.[30]

In 1975, Jung's original distinction between mania and hypomania gained support. Fieve and Dunner published an article recognizing that only individuals in a manic state require hospitalization. It was proposed that the presentation of either the one state or the other differentiates two distinct diseases; the proposition was initially met with skepticism. However, studies since confirm that bipolar II is a "phenomenologically" distinct disorder.[5]

Empirical evidence, combined with treatment considerations, led the DSM-IV Mood Disorders Work Group to add Bipolar II Disorder as its own entity in the 1994 publication (only one other mood disorder was added to this edition, indicating the conservative nature of the DSM-IV work group). In May 2013, the DSM-5 will be released. Two revisions to the existing bipolar II criteria are anticipated. The first expected change will reduce the required duration of a hypomanic state from four to two days. The second change will allow hypomania to be diagnosed without the manifestation of elevated mood;that is, increased energy/activity will be sufficent. The rationale behind the latter revision that some individuals with bipolar II manifest only visible changes in energy. Without presenting elevated mood, these indiviudals are commonly misdiagnosed with Major Depressive Disorder. Consequently, they receive presrciptions for antidepressants, which unaccompanied by mood stabilizers, may inducing rapid cycling or mixed states. [33]

Society and culture

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Main article: List of people with bipolar disorder
  • Catherine Zeta-Jones received treatment for bipolar II disorder after dealing with the stress of her husband's throat cancer. According to her publicist, Zeta Jones made a decision to check into a "mental health facility" for a brief stay.[34]
  • Trent Reznor had been diagnosed with Bipolar II. His album "The Fragile" is about his condition.[37]

Specifiers

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  • Chronic
  • With catatonic features
  • With melancholic features
  • With psychotic features
  • With atypical features
  • With postpartum onset
  • Longitudinal course specifiers (with and without inter-episode recovery)
  • With seasonal pattern (applies only to the pattern of major depressive episodes)
  • With rapid cycling

See also

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References

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  1. ^ a b c d e f g h i j k l m n Benazzi, F.(2007) Bipolar II disorder: epidemiology, diagnosis, and management. CNS Drugs, 21,(9),727-740.
  2. ^ a b c d e f g h i j k l m Berk, M. & Dodd, S. (2005). Bipolar II disorder: a review. Bipolar Disorders,7, 11-21.
  3. ^ Buskist, W. & Davis, S.F., ed. (2008). 21st Century Psychology: A Reference Handbook. Thousand Oaks, CA: Sage Publications Inc. p. 290. ISBN 978-1-4129-4968-2.{{cite book}}: CS1 maint: multiple names: editors list (link)
  4. ^ "WebMD Bipolar II". Retrieved 22 November 2011.
  5. ^ a b c d e f Mak, A.D.P. (2007). A short review on the diagnostic issues of bipolar spectrum disorders in clinically depressed patients -- Bipolar II disorder.Hong Kong Journal of Psychiatry,17, 139-144.
  6. ^ Merikangas, Kathleen R. & Lamers, Femke (2011). "The 'true' prevalence of bipolar II disorder." Current opinion in psychiatry 25(1), 19-23.
  7. ^ Manicavasagar, Vijaya (2008). Gordan Parker (ed.). Bipolar II Disorder: Modelling, Measuring, and Managing. Cambridge, England: Cambridge University Press. ISBN 978-0-521-87314-7.
  8. ^ a b Orum, Margo (2008). Gordan Parker (ed.). Bipolar II Disorder: Modelling, Measuring, and Managing. Cambridge, England: Cambridge University Press. ISBN 978-0-521-87314-7.
  9. ^ Smith, Meg (2008). Gordan Parker (ed.). Bipolar II Disorder: Modelling, Measuring, and Managing. Cambridge, England: Cambridge University Press. pp. 195–203. ISBN 978-0-521-87314-7.
  10. ^ Proudfoot, Judith; Doran, Justin; Manicavasagar, Vijaya; & Parker, Gordon (2010). "The precipitants of manic/hypomanic episodes in the context of bipolar disorder: A review." Journal of Affective Disorders 133, 381-387.
  11. ^ a b Baek, J. H., Park, D. Y., Choi, J., Kim, J. S., Choi, J. S., Ha, K., ... Hong, K. S. (2011). Differences between bipolar I and bipolar II in clinical features, comorbidity, and family history. Journal of Affective Disorders, 131, 59–67.
  12. ^ American Psychiatric Association (2000). Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition Text Revision (DSM-IV-TR).
  13. ^ a b c d e f g h i j k Hadjipavlou, George (2008). Gordan Parker (ed.). Bipolar II Disorder: Modelling, Measuring, and Managing. Cambridge, England: Cambridge University Press. pp. 61–74 [65]. ISBN 978-0-521-87314-7. {{cite book}}: Unknown parameter |coauthors= ignored (|author= suggested) (help)
  14. ^ a b c El-Mallakh R, Weisler RH, Townsend MH, Ginsberg LD (2006). "Bipolar II disorder: current and future treatment options". Annals of Clinical Psychiatry : Official Journal of the American Academy of Clinical Psychiatrists. 18 (4): 259–66. doi:10.1080/10401230600948480. PMID 17162626.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  15. ^ Skeppar, Peter; Adolfsson, Rolf (1 January 2006). "Bipolar II and the bipolar spectrum". Nordic Journal of Psychiatry. 60 (1): 7–26. doi:10.1080/08039480500504685. PMID 16500795.
  16. ^ "Understanding Bipolar Disorder -- Treatment". Retrieved 22 November 2011.
  17. ^ a b c d Randall, Carol (2010). "1". Neuropsychological emotion processing abnormalities in bipolar disorder I and II (Ph. D thesis). University of Nevada. Retrieved 19 October 2011.
  18. ^ a b c d e Ruggero, Camilo J.; Chelminski, Iwona; Young, Diane; Zimmerman, Mark (December 1, 2007). "Psychosocial impairment associated with bipolar II disorder". Journal of Affective Disorders. 104 (1–3): 53–60. doi:10.1016/j.jad.2007.01.035. PMC 2147679. PMID 17337067.
  19. ^ a b c d e f McAllister-Williams, R. Hamish (January 1, 2006). "Relapse prevention in bipolar disorder: a critical review of current guidelines". Journal of Psychopharmacology. 20 (2): 12–16. doi:10.1177/1359786806063071. PMID 16551667.
  20. ^ a b c d Hadjipavlou, George (2008). Gordan Parker (ed.). Bipolar II Disorder: Modelling, Measuring, and Managing. Cambridge, England: Cambridge University Press. pp. 120–132. ISBN 978-0-521-87314-7.
  21. ^ a b c d e f Wingo, A. P.; Baldessarini, R. J.; Compton, M. T.; Harvey, P. D. (May 15, 2010). "Correlates of recovery of social functioning in types I and II bipolar disorder patients". Psychiatry Research. 177 (1–2): 131–134. doi:10.1016/j.psychres.2010.02.020. PMC 2859974. PMID 20334933.
  22. ^ a b c d e Rosa, A.R.; Bonnín, C.M.; Vázquez, G.H.; Reinares, M.; Solé, B.; Tabarés-Seisdedos, R.; Balanzá-Martínez, V.; González-Pinto, A.; Sánchez-Moreno, J.; Vieta, E. (December 1, 2010). "Functional impairment in bipolar II disorder: Is it as disabling as bipolar I?". Journal of Affective Disorders. 127 (1–3): 71–76. doi:10.1016/j.jad.2010.05.014. PMID 20538343.
  23. ^ a b Chang, Jae Seung; Choi, Sungwon; Ha, Kyooseob; Ha, Tae Hyon; Cho, Hyun Sang; Choi, Jung Eun; Cha, Boseok; Moon, Eunsoo (June 1, 2011). "Differential pattern of semantic memory organization between bipolar I and II disorders". Progress in Neuro-Psychopharmacology & Biological Psychiatry. 35 (4): 1053–1058. doi:10.1016/j.pnpbp.2011.02.020. PMID 21371517.
  24. ^ a b c d Orum, Margo (2008). Gordan Parker (ed.). Bipolar II Disorder: Modelling, Measuring, and Managing. Cambridge, England: Cambridge University Press. pp. 177–194. ISBN 978-0-521-87314-7.
  25. ^ Benazzi, Franco (2008). Gordan Parker (ed.). Bipolar II Disorder: Modelling, Measuring, and Managing. Cambridge, England: Cambridge University Press. pp. 232–236. ISBN 978-0-521-87314-7.
  26. ^ a b MacQueen, Glenda M.; Young, L. Trevor (March 2001). "Bipolar II disorder: symptoms, course, and response to treatment". Psychiatric Services. 52 (3): 358–361. doi:10.1176/appi.ps.52.3.358. ISSN 1075-2730. PMID 11239105.{{cite journal}}: CS1 maint: date and year (link)
  27. ^ a b Fieve, Ronald R. (2009). Bipolar Breakthrough: The Essential Guide to Going Beyond Moodswings to Harness Your Highs, Escape the Cycles of Recurrent Depression, and Thrive with Bipolar II. New York: Rodale. p. 232. ISBN 978-1-60529-645-6.
  28. ^ a b Manicavasagar, Vijaya (2008). Bipolar II Disorder: Modelling, Measuring, and Managing. Cambridge, England: Cambridge University Press. pp. 151–176. ISBN 978-0-521-87314-7.
  29. ^ Cerullo, Michael A. & Strakowski, Stephen M. (2007). "The prevalence and significance of substance use disorders in bipolar type I and II disorder." Substance Abuse Treatment, Prevention, and Policy2(29),doi: 10.1186/1747-592-X-2-29
  30. ^ a b c Thompson, J. (2012) A Jungian Approach to Bipolar Disorder, Soul Books
  31. ^ Jung, C.G., (1903) ‘On Manic mood disorder’ in Psychiatric Studies Vol-1, Collected works, second edition (1970) translated by R.F.C Hull. Routledge and Kegan Paul.
  32. ^ Jung, C.G., (1903) ‘On Manic mood disorder’ in Psychiatric Studies Vol-1, Collected works, second edition (1970) translated by R.F.C Hull. Routledge and Kegan Paul. pp.109-111
  33. ^ Frances, A. & Jones, K. D. (2012). Bipolar disorder type II revisited. Bipolar Disorders, 14, 474-477.
  34. ^ "Catherine Zeta Jones treated for bipolar disorder". BBC News. 14 April 2011.
  35. ^ http://www.people.com/people/article/0,,20483380,00.html. {{cite news}}: Missing or empty |title= (help)
  36. ^ http://www.mtv.com/news/articles/1662394/demi-lovato-bipolar-disorder.jhtml. {{cite news}}: Missing or empty |title= (help)
  37. ^ a b http://www.abcarticledirectory.com/Article/Famous-People-With-Bipolar-Condition-Past-and-Present/1366689l. {{cite news}}: Missing or empty |title= (help)
[edit]


Category:Bipolar spectrum Category:Depression (psychology) Category:Mood disorders Category:Psychiatric diagnosis

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