Keon-Ah Cheon

In order to develop a structured and objective diagnostic instrument, authors completed: (1) the translation and back translation of the Korean version of the Kiddie-Schedule for Affective Disorders and Schizophrenia - Present and Lifetime Version (K-SADS-PL) and (2) the examination of its validity and reliability of the K-SADS-PL-Korean version (K-SADS- PL) when used with Korean children. A total of 91 study subjects were recruited from child and adolescent psychiatry outpatient clinics. Clinic

Autism spectrum disorder (ASD) is a highly prevalent neurodevelopmental disorder characterized by impaired social communication and restricted and repetitive behaviors (RRBs). Over the past decade, neuroimaging studies have provided considerable insights underlying neurobiological mechanisms of ASD. In this review, we introduce recent findings from brain imaging studies to characterize the brains of ASD across the human lifespan. Results of structural Magnetic Resonance Imaging (MRI) studies dea

ObjectiveaaThe aim of this study is to investigate abnormal findings of social brain network in Korean children with autism spectrum disorder (ASD) compared with typically developing children (TDC). MethodsaaFunctional magnetic resonance imaging (fMRI) was performed to examine brain activations during the processing of emotional faces (happy, fearful, and neutral) in 17 children with ASD, 24 TDC. ResultsaaWhen emotional face stimuli were given to children with ASD, various areas of the social br

Objective It is known that many of the cognitive and social deficits associated with autism can arise from abnormal functional connectivity between brain networks. This aberrant functional connectivity in autism spectrum disorders (ASD) can be explained by impaired integrity of white matter tracts that link distant regions of the networks. Methods We investigated white matter in 9 children with high-function autism (HFA) compared to 13 typically developing controls using diffusion tensor imaging

Purpose: It is well known that expressive language impairment is commonly less severe than receptive language impairment in children with autism spectrum disorder(ASD). However, this result is based on experiments in Western countries with Western language scales. This study tries to find whether the result above is applicablefor toddlers in a non-Western country; more specifically, in Korea with non-Western language scales. Materials and Methods: The participants were 166 toddlersaged between 2

Purpose: We aimed to determine whether Autism Spectrum Disorder (ASD) would show neural abnormality of the social reward system using functional MRI (fMRI). Materials and Methods: 27 ASDs and 12 typically developing controls (TDCs) participated in this study. The social reward task was developed, and all participants performed the task during fMRI scanning. Results: ASDs and TDCs with a social reward learning effect were selected on the basis of behavior data. We found significant differences in

Purpose: Emergency department (ED) is a common treatment setting for adolescents with clinically serious self-harm. Here, we investigated the clinical characteristics and trends of adolescents with self-harm who visited the ED in one Korean university hospital. We also compared patients with a single ED visit to those with multiple ED visits to identify the risk factor of repeated visits. Materials and Methods: We retrospectively identified patients aged 12 to 18 years who presented to ED for se

Purpose: Our purpose was to investigate psychological problems and clinical outcomesin children with psychogenic non-epileptic seizures (PNES). Materials and Methods: We retrospectively reviewed the data of 25 patients who were diagnosed with PNES between 2006 and 2012. Results: Twenty-five children with PNES, aged 8 to 19 years (mean 13.82), were referred to psychiatrists for psychiatric assessment. On their initial visit, 72% of patients had comorbid psychological problems,including depression

Purpose: Our study aimed to examine psychometric properties and cross-cultural utility of the Behavior Assessment System for Children-2, Parent Rating Scale-Child (BASC-2 PRS-C) in Korean children. Materials and Methods: Two study populations were recruited: a general population sample (n=2115) of 1st to 6th graders from 16 elementary schools and a clinical population (n=219) of 6–12 years old from 5 child psychiatric clinics and an epidemiological sampleof autism spectrum disorder. We assessed

Objectives：The purpose of this study is to examine the effects of the characteristics of victim and sexual abuse on posttraumatic psychiatric symptoms in children and adolescents with a history of sexual abuse. Methods：A total of 137 children and adolescents were recruited from the Seoul Sunflower Children Center, a nation-funded sexual violence victim protection center, from January 2009 to December 2013. We collected the demographic data of the victims and the Trauma Symptom Checklist for Chil

Purpose: The aim of this study was to investigate differences in language ability and emotional-behavioral problems according to the severity of social communication impairments (SCI) and restricted and repetitive behaviors (RRB) in children with autism spectrum disorders (ASD). Materials and Methods: We grouped 113 children with ASD aged 3–12 years according to the severity of SCI and RRB, and investigated language differences and emotional-behavioral problems among the severity groups. If diff

Purpose: Children and adolescents diagnosed with cancer experience emotional distress, such as sadness, worrying, and irritability. However, there is little information about the psychological well-being of parents at the time of their child’s diagnosis. We sought to identify factors that were associated with emotional distress in cancer patients as a basis for developing innovative psychologicalinterventions. Materials and Methods: A retrospective chart review was performed on patients newly di

In clinical practice, pharmacological treatment is mostly focused on behavioral symptoms in everyday life. Nevertheless, persistenteffort continues to develop medication for causal treatment. Recent changes in diagnostic criteria from Diagnostic and StatisticalManual of Mental Disorders, 4th edition, text revision (DSM-IV-TR) to DSM-5 would affect not only diagnosing approaches,but also therapeutic approaches. Because previous pervasive developmental disorders have been integrated into a single

Objectives：The aim of this study was to investigate the effect of the clinical and demographic variables such as body weight, dosage, family history of attention-deficit hyperactivity disorder (ADHD), and psychiatric co-morbidity on the side-effects of OROS-Methylphenidate (OROS-MPH), and to evaluate the relationship between drug response and side effect severity. Methods：A total of 144 children (ages 6-18) with diagnosed ADHD were treated with OROS-MPH. Children were examined at baseline and af

Objective: This study compared the efficacy and tolerability of aripiprazole with that of other atypical antipsychotics by examining patients with pediatric bipolar disorder (PBD) at a child and adolescent psychiatric clinic in a university hospital in Korea. Methods: We reviewed the medical records of 127 pediatric patients with bipolar disorder aged 4-18 years treated at Department of Child and Adolescent Psychiatric, Yonsei University Severance Hospital between January 2010 and October 2011 t