Definitions of Rapid, Ultrarapid, and Ultradian Cycling and of Episode Duration in Pediatric and Adult Bipolar Disorders: A Proposal to Distinguish Episodes from Cycles
To propose terminology to distinguish cycles from episodes in children and adults with bipolar disorder (BP).
To examine current definitions of rapid cycling and episodes in both child and adult BP, an Internet search of the MEDLINE database was conducted.
Investigations of rapid cycling in adults used the terms cycle and episode interchangeably to describe discrete periods of mood disorders. Two studies of children and one study of adults with BP, however, reported cycles occurring daily (ultradian cycling) or every few days (ultrarapid cycling). Without definitions to differentiate cycles from episodes, determining the overall duration of illness in subjects who experience ultrarapid or ultradian cycling is not possible. For example, a child cycled twice a day, every day, for 365 days (1 year). With the terminology currently in use, it is unclear whether this should be described as a single episode that had a duration of 365 days or as approximately 730 episodes (2 cycles per day x 365 days), each less than 24 hours in duration. Moreover, adults with BP may have more intermittent pathology than children (e.g., adults may cycle 4 days per week, versus children may cycle 7 days per week).
The following definitions are proposed. (1) Episodes will be defined by (a) the duration from onset to offset of a period of at least 2 weeks in length during which only one mood state persists or (b) the duration from onset to offset of a period of ultrarapid or ultradian cycling for at least 2 weeks. (2) Cycles will be defined by mood switches occurring daily or every few days during an episode. Further research will be needed to elucidate potential differences between child and adult cycling patterns.
Available from: Kimberly Renk
- "To better classify these symptoms based on duration, Suppes and colleagues  modified Kramlinger and Post's  definitions of rapid cycling. In particular, they defined rapid cycling as the experience of more than four mood episodes per year, ultrarapid cycling as the experience of more than four episodes per month, and ultraradian cycling as the experience of more than one mood episode per day for at least four days per week . Generally, the International Society for Bipolar Disorders (ISBD) Task Force found support for the current definition of rapid cycling . "
[Show abstract] [Hide abstract]
ABSTRACT: Although bipolar disorder historically was thought to only occur rarely in children and adolescents, there has been a significant increase in children and adolescents who are receiving this diagnosis more recently (Carlson, 2005). Nonetheless, the applicability of the current bipolar disorder diagnostic criteria for children, particularly preschool children, remains unclear, even though much work has been focused on this area. As a result, more work needs to be done to further the understanding of bipolar symptoms in children. It is hoped that this paper can assist psychologists and other health service providers in gleaning a snapshot of the literature in this area so that they can gain an understanding of the diagnostic criteria and other behaviors that may be relevant and be informed about potential approaches for assessment and treatment with children who meet bipolar disorder criteria. First, the history of bipolar symptoms and current diagnostic criteria will be discussed. Next, assessment strategies that may prove helpful for identifying bipolar disorder will be discussed. Then, treatments that may have relevance to children and their families will be discussed. Finally, conclusions regarding work with children who may have a bipolar disorder diagnosis will be offered.
Available from: Ann E Maloney
- "In contrast, most adults demonstrate a fairly consistent mood state throughout any given episode. In pedBP, a single episode will often last for a very extended period giving the appearance of a chronic condition, whereas in adults, episodes are usually limited to a few weeks.38,39 Second, children and, to a lesser extent, adolescents frequently experience mixed states of mania and depression, whereas adults less frequently show such states. "
[Show abstract] [Hide abstract]
ABSTRACT: Severe and persistent mental illnesses in children and adolescents, such as early- onset schizophrenia spectrum (EOSS) disorders and pediatric bipolar disorder (pedBP), are increasingly recognized. Few treatments have demonstrated efficacy in rigorous clinical trials. Enduring response to current medications appears limited. Recently, olanzapine was approved for the treatment of adolescents with schizophrenia or acute manic/mixed episodes in pedBP.
PubMed searches were conducted for olanzapine combined with pharmacology, schizophrenia, or bipolar disorder. Searches related to schizophrenia and bipolar disorder were limited to children and adolescents. The bibliographies of the retrieved articles were hand-checked for additional relevant studies. The epidemiology, phenomenology, and treatment of EOSS and pedBP, and olanzapine's pharmacology are reviewed. Studies of olanzapine treatment in youth with EOSS and pedBP are examined.
Olanzapine is efficacious for EOSS and pedBP. However, olanzapine is not more efficacious than risperidone, molindone, or haloperidol in EOSS and is less efficacious than clozapine in treatment-resistant EOSS. No comparative trials have been done in pedBP. Olanzapine is associated with weight gain, dyslipidemia, and transaminase elevations in youth. Extrapyramidal symptoms, neuroleptic malignant syndrome, and blood dyscrasias have also been reported but appear rare.
The authors conclude that olanzapine should be considered a second-line agent in EOSS and pedBP due to its risks for significant weight gain and lipid dysregulation. Awareness of the consistent weight and metabolic changes observed in olanzapine-treated youth focused attention on the potential long-term risks of atypical antipsychotics in youth.
Available from: Galanter Ca
- "Other investigators waive the ''A'' episodicity criterion for mania if a child presents with particularly severe irritability  . A third approach requires elevated mood or grandiosity for the diagnosis of mania and redefines an episode as a mood state that is at least 2 weeks long or has the onset to offset of a period of cycling and a cycle as mood switches during an episode . These and other variations in assessment are likely to affect the characteristics of the recruited patients and the rates of BD. "
[Show abstract] [Hide abstract]
ABSTRACT: The co-occurrence of attention deficit hyperactivity disorder (ADHD) and bipolar disorder has received much recent attention in the literature. The authors review the literature examining associations between ADHD and bipolar disorder in children, and data concerning severe irritability in youth with ADHD. This article focuses on (1) population-based studies examining ADHD and bipolar disorder or ADHD and co-occurring irritability, (2) the co-occurrence and prospective relationships of ADHD and bipolar disorder in clinical samples, (3) phenomenology and assessment of bipolar disorder and ADHD, (4) treatment of comorbid ADHD and bipolar disorder, (5) family and genetic studies of ADHD and bipolar disorder, and (6) pathophysiologic comparisons between children with ADHD and irritability and bipolar disorder. We draw on the research to make clinical recommendations and highlight important directions for future research.
Data provided are for informational purposes only. Although carefully collected, accuracy cannot be guaranteed. The impact factor represents a rough estimation of the journal's impact factor and does not reflect the actual current impact factor. Publisher conditions are provided by RoMEO. Differing provisions from the publisher's actual policy or licence agreement may be applicable.