Regional brain volumes and symptom severity in body dysmorphic disorder.

TitleRegional brain volumes and symptom severity in body dysmorphic disorder.
Publication TypeJournal Article
Year of Publication2009
AuthorsFeusner, JD, Townsend J, Bystritsky A, McKinley M, Moller H, Bookheimer S
JournalPsychiatry research
Volume172
Issue2
Pagination161-7
Date Published2009 May 15
ISSN0165-1781
KeywordsAdult, Amygdala, Body Image, Brain, Brain Mapping, Caudate Nucleus, Diagnostic and Statistical Manual of Mental Disorders, Female, Frontal Lobe, Functional Laterality, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male, Obsessive-Compulsive Disorder, Psychiatric Status Rating Scales, Severity of Illness Index, Somatoform Disorders
Abstract

Body dysmorphic disorder (BDD) is a severe psychiatric condition in which individuals are preoccupied with perceived defects in their appearance. Little is known of the pathophysiology or neurobiology of BDD. Recent evidence from a functional MRI study examining visual processing of faces demonstrated abnormal activation patterns in regions including left-sided inferior frontal gyrus (IFG) and amygdala. To investigate morphometric abnormalities, we compared brain volumes from high-resolution T1 magnetic resonance images of 12 unmedicated subjects with BDD to images of 12 matched controls using voxel-based morphometry (VBM). In addition, we compared volumes in specific regions of interest including the IFG, amygdala, caudate, and total grey and white matter and examined correlations with symptom severity. VBM revealed no statistically significant volumetric differences, nor were there significant differences in any of the regions of interest. However, there were significant positive correlations between scores on the BDD version of the Yale-Brown Obsessive-Compulsive Disorder Scale (BDD-YBOCS) and volumes of the left IFG (r=0.69) and the right amygdala (r=0.54). These findings of correlations between BDD symptom severity and volumes of the left IFG and the right amygdala. These are in concordance with the involvement of these regions in pathological face processing, which may contribute to the primary symptomatology.

Alternate JournalPsychiatry Res