Byline: Jayaprakash. Raghavan Sir, Thanks to the detailed and objective observations and critical comments about the study titled “Determinants of symptom profile and severity of conduct disorder (CD) in a tertiary level pediatric care set-A pilot study.” The majority of study population (55%) was relatively smaller children (6–11 years), since the study setting was behavioral pediatrics unit, which is an exclusive center for providing child and adolescent mental health service under Pediatric Department. Many smaller children with externalizing disorder were being referred to. Experiences showed that the attributed stigma attached to availing mental health service to children and adolescents were less in the pediatric background. Conduct disorder is the most common child psychiatric disorder.[sup][1] It is also one of the most difficult and intractable mental health problems in children and adolescents, and is characterized by marked chronic conflict with parents, teachers, and peers. In the International Classification of Disease-10 (ICD-10) (WHO, 1992),[sup][2] CDs are included in the section called disorders of childhood and adolescence (F90–98) and coded as F91. When CD presents with co morbid hyperkinetic disorder, they are coded as F90.1. Hyperkinetic CD. Comparative nosology shows that ICD-10 diagnostic guide lines for CD are descriptive, but Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition Text Revision (DSM-IV-TR)[sup][3] is categorical. Another difference is that, ICD-10 diagnoses only CD and subtype it as oppositional defiant disorder (ODD) only, if less severe symptoms were present. However, DSM-IV-TR treats each disorder separately, may either diagnose ODD or CD. DSM-IV-TR divides the CD into two groups namely childhood onset and adolescent onset based on the age of onset, before or after the age 10 years. The ICD-10, diagnostic criteria for research (ICD-10, DCR)[sup][4] provides a symptom list of 23 items for DCR on CD as given in DSM-IV TR. The symptom list is divided into 8 less severe items and 15 more severe items. However ICD-10, DCR also diagnose only CD and subtype it as ODD, if only less severe symptoms were present. ICD-10, DCR gives specification for childhood or adolescent onset based on the age of onset before or after the age of 10 years as in DSM-IV-TR. Specification for possible subdivisions is given, based on hyperactivity, emotional disturbances and severity of CD. The severity of CD is graded as mild, moderate and severe. In the present study, we used ICD-10, DCR for defining the study population. The main critical points or comments raised for clarifications were three namely: *Does the children with CD having comorbid hyperkinetic disorder fulfilled the criteria for hyperkinetic CD? validity of findings in the present scenario could have been increased using a standardized scale child behavior checklist (CBCL) *The inherent problem of misreading of symptoms of hyperkinetic disorder and CD. Regarding the first point, the 45% of the children with CD also had fulfilled the diagnostic criteria for comorbid hyperkinetic disorder in the present study. Hence, it could be coded as F90.1 Hyperkinetic CD as per ICD-10. That is, both conduct and hyperkinetic symptoms were adequately present which satisfied the diagnostic guideline for hyperkinetic CD. Regarding the second point, the scale we used in the study was revised behavior problem checklist (RBPC).[sup][5] RBPC is an 89 item scale with each item having weighted scoring as 0, 1 and 2. The RBPC is developed and standardized for use in screening and clinical assessment of school-age children in kindergarten through 12[sup]th grade. …
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