Seasonality of Mania in New Zealand

Mulder, Roger; Innzna, Cosgriff, John,; Smith, A. M.; Joyce, Peter R.

doi:10.3109/00048679009077681

Cited by 50 publications

(24 citation statements)

References 21 publications

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“…Similar data had been described by Symond and Williams [2], though these data statistically reanalyzed also showed evidence of such a sea- Kerr-Corrêa/Souza/Calil sonal manic peak for males [26]. However, other studies reported on data indicating that the seasonal admission pattern for mania was more robust in females [10,12]. Despite the limited available data, the possibility of females being more vulnerable than males to the effects of seasonal changes on the course of affective illness, and especially in the recurrent pattern of mania, deserves further research.…”

Section: Discussionmentioning

confidence: 42%

“…Kerr-Corrêa/Souza/Calil [12]. However, these mania admission peaks have been unstable from year to year [10][11][12], change with age and number of hospital admissions [10], and also show variations in different regions of the same country [11]. In addition, other investigations, carried out in both hemispheres, have not found a seasonal pattern in admission rates for mania [7,8,13,14], nor in manic episodes in a cohort of 86 patients over a 6-year period [15].…”

Section: Introductionmentioning

confidence: 99%

“…Studies from the southern hemisphere are scanty, but they have shown a similar trend for the occurrence of mania in Australia [9], New Zealand [10,11], and Tasmania This study was presented as a new research poster at the 1994 APA Annual Meeting in Philadelphia, USA. Kerr-Corrêa/Souza/Calil [12].…”

Section: Introductionmentioning

confidence: 99%

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Affective Disorders, Hospital Admissions, and Seasonal Variation of Mania in a Subtropical Area, Southern Hemisphere

1998

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Hospital admissions (n = 15,450) to a state psychiatric hospital in Botucatu, São Paulo State, Brazil, over a 10-year period (1982–1991) were reviewed. 157 (1%) patients received a probable diagnosis of affective disorder according to DSM-III-R criteria. Among them, 46% had been diagnosed by the staff psychiatrists, and their diagnoses were sustained by the researchers, whereas 54% were diagnosed only by one of the researchers (F.K.C.). These last patients had previously received a diagnosis of paranoid schizophrenia or unspecified psychosis (ICD-9). Most of the patients with affective disorders were bipolar: 72 and 8%, respectively, presented manic and depressive episodes. Thus, only 20% received a diagnosis of major depression. A seasonal pattern in hospital admission was observed only for mania in women, their episodes occurring more often (p < 0.02) in spring and summer. No significant seasonal pattern in hospital admission for depression was found.

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Section: Discussionmentioning

confidence: 42%

Section: Introductionmentioning

confidence: 99%

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Affective Disorders, Hospital Admissions, and Seasonal Variation of Mania in a Subtropical Area, Southern Hemisphere

1998

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“…Evidence from studies in the southern hemisphere shows similar trends for an increase in mania in the springsummer (30)(31)(32)(33); however, this finding is not universal (34). One finding shows a spring/ summer peak in the depressive phase of the illness (2), whereas others indicate autumn increases (35) or no seasonal variation in depression (34).…”

Section: Introductionmentioning

confidence: 81%

Seasonal influences on first-episode admission in affective and non-affective psychosis

Hallam

Berk

Kader

et al. 2006

Acta Neuropsychiatr.

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Background: Since bipolar affective disorder has been recorded, clinicians treating patients with this disorder have noted the cyclic nature of episodes, particularly an increase in mania in the spring and summer months and depression during winter. Objective: The aim of this study was to investigate seasonality in symptom onset and service admissions over a period of 10 years in a group of patients (n ¼ 359) with first-episode (FE) mania (n ¼ 133), FE schizoaffective disorder (n ¼ 49) and FE schizophrenia (n ¼ 177). Method: Patients were recruited if they were between 15 and 28 years of age and if they resided in the geographical mental health service catchment area. The number of patients experiencing symptom onset and service admission over each month and season was recorded. Results: In terms of seasonality of time of service admission, the results indicate a high overall seasonality (particularly in men), which was observed in both the schizoaffective and the bipolar groups. In terms of seasonality of symptom onset, the results indicate that seasonality remains in the male bipolar group, but other groups have no seasonal trend. Conclusions: This provides further evidence that systems mediating the entrainment of biological rhythms to the environment may be more pronounced in BPAD than in schizoaffective disorder and schizophrenia. These results may help facilitate the preparedness of mental heath services for patients at different times of the year.

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“…Many authors have reported a characteristic trend towards mania during summer months for some patients (Hare and Walter [62] , Myers and Davies [63] and Takei et al [64] ), whilst others report peaks in the spring (Parker and Walter [65] and Mulder et al [66] ). Leuthold [67] , Frangos et al [68] , Carney et al [69] and Kamo et al [70] reported major peaks in the spring and minor peaks in the fall, while McCartney [71] reported a higher frequency in the fall.…”

Section: Seasonal Patternmentioning

confidence: 99%

The Road to DSM-V

Colom

Vieta²

2009

Psychopathology

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There is general agreement that DSM-IV and ICD-10 require major improvements in format and content to make them more valid, evidence-based and clinically useful. DSM-IV-TR currently includes a series of clinical features that provide potentially useful information on cross-sectional and longitudinal courses of bipolar disorder. This conceptual and data-driven review proposes changes in the current classification by removing, modifying and adding bipolar episode and course specifiers in DSM-V. Specifiers to be maintained would be ‘with catatonic features’, ‘with melancholic features’, ‘with atypical features’ and ‘with rapid cycling’. The ‘seasonal pattern’ modifier should be amended to allow manic, hypomanic and mixed episodes to be included in the description. Some specifiers should likely be substantially reconceptualized (‘severity/psychosis/remission’) or removed (‘with post-partum onset’). Age at onset (early, intermediate or late onset) and predominant polarity (manic, depressive) should be added for their relevance for course and outcome.

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Seasonality of Mania in New Zealand

Cited by 50 publications

References 21 publications

Affective Disorders, Hospital Admissions, and Seasonal Variation of Mania in a Subtropical Area, Southern Hemisphere

Affective Disorders, Hospital Admissions, and Seasonal Variation of Mania in a Subtropical Area, Southern Hemisphere

Seasonal influences on first-episode admission in affective and non-affective psychosis

The Road to DSM-V

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