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Indian Pediatr 2012;49:
14-15 |
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Childhood Mood Disorders: Myth or Reality |
Soumya Basu and V Senthil Kumar Reddi*
Consultant, Child and Adolescent Mental Health Service,
Latrobe Regional Hospital, Traralgon, Victoria, Australia 3844; and
*Assistant Professor, Department of Psychiatry, National Institute of
Mental Health and Neurosciences (NIMHANS),
Bangalore-560029, India.
Email: [email protected]
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The concept of depressive syndrome and mania that is
distinct from the broad class of childhood onset emotional disorders has a
relatively short history. In the past it was felt that children, for
theoretical reasons such as ‘immature personality structures’ could not
experience extremes of mood. Depression in adolescents was viewed as a
normal feature of development, so-called ‘emotional turmoil’. However, the
last two decades saw intensive research in this area which has lead to a
reappraisal of the concept of childhood depression and its difference from
adolescent depression. In contrast to adolescent depression,
pre-adolescent depression is less likely to lead to adult depression, has
more overlap with other disorders, is less prevalent, shows a male
preponderance and is more strongly associated with family dysfunction [1].
The clinical presentation of bipolar-disorder (BD) in
the pre-adolescent and early adolescent age groups is greatly debated,
although mid- to late-adolescent–onset BD is considered similar to adult
BD [2]. Apart from the classical descriptions of bipolar disorder,
children presenting with ‘‘affective storms,’’ mood lability, severe
irritability and temper outbursts, symptoms of depression, anxiety,
hyperactivity, poor concentration, and impulsivity with or without clear
episodicity, can attract the DSM IV diagnosis of bipolar disorder- not
otherwise specified (BD-NOS) [3]. Over the past decade, there is a surge
in the numbers of children and adolescents diagnosed with BD in USA.
However, there is a considerable transatlantic debate and European
skepticism over the high prevalence of pediatric BD in the US [2]. A large
epidemiological study in the UK did not detect any cases of pre-adolescent
mania. Studies in psychiatric hospitals found BD in 0.0006% of
hospitalized patients in Finland, 1.2% in Denmark, and 2.5-4.2% in India
[4].
Additionally, the treatment for pre-pubertal affective
disorder is controversial due to the limited evidence of the efficacy and
safety of mood-stabilizer and antipsychotic medications in this population
[5]. Ethical challenges in conducting clinical trials of psychotropic
medications in children [6] and Blackbox warnings against the use of
certain anti-depressants in this group has guidelines focusing on the
efficacy of psychotherapy in depression [1] and off label clinical use of
psychotropics. The proponents of the debate claim that the early detection
and treatment of affective disorder would prevent adult morbidity and site
examples from adult psychiatry literature of retrospective studies
claiming that a high percentage of affective disorders have roots in
childhood and adolescence. The skeptics claim that affect-dysregulation
can be a symptom of a broad range of clinical condition like ADHD, conduct
disorder, developmental trauma and misdiagnosis and pharmacological
treatment may be detrimental [5].
In the background of such global controversies, this
study by Sagar, et al. [7] gives an interesting insight in the
Indian clinical scenario. Although the study is retrospective, it shows
bipolar disorder as being less common than depression, half with an onset
in early childhood, presentation age being <13 years, lack of major
psychosocial stressors in majority of the cases and male preponderance.
The study doesn’t make clear distinctions in the clinical presentation
between pre-pubertal and post- pubertal presentations.
However, the SD of <3 in both the groups indicate that there were a
substantial number of patients below the age of 10 years and a significant
number of patients in the bipolar group presented with >1 episode,
indicating an earlier onset of the illness. Although difficult to extend
the findings to any epidemiological trends in the Indian population, it
sheds some light on the clinical presentation of mood disorders in the
clinic based population from an Indian context, adding to the emerging
literature and greater understanding of the concept of mood disorders in
childhood.
Funding: None; Competing interests: None
stated
References
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Massachusetts: Blackwell Publishing Ltd; 2002.p.463-85.
2. Soutullo CA, Chang KD, Dýez-Suaěrez A,
Figueroa-Quintana A, Escamilla-Canales I, Rapado-Castro M, et al.
Bipolar disorder in children and adolescents: international perspective on
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Psychiatry.1996;35:997-1008.
4. Hoop JG. Ethical issues in psychiatric research on
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discussion 85-6.
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P. A systematic review of the naturalistic course and treatment of
early-onset bipolar disorder in a child and adolescent psychiatry center.
Compr Psychiatry. 2004;45:148–54.
7. Sagar R, Pattanayak RD, Mehta M. Clinical profile of mood disorders
in children. Indian Pediatr. 2011; 49:21-3.
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