Minor physical anomalies in patients with first-episode psychosis: their frequency and diagnostic specificity.
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Authors
Lloyd, T
Dazzan, P
Dean, K
Park, S B G
Fearon, P
Doody, G A
Tarrant, J
Morgan, K D
Morgan, C
Hutchinson, G
Issue Date
2007-07-30
Type
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Journal Article
Research Support, Non-U.S. Gov't
Language
en
Keywords
Alternative Title
Abstract
An increased prevalence of minor physical anomalies (MPAs) has been extensively documented in schizophrenia but their specificity for the disorder remains unclear. We investigated the prevalence and the predictive power of MPAs in a large sample of first-episode psychotic patients across a range of diagnoses.
MPAs were examined in 242 subjects with first-episode psychosis (50% schizophrenia, 45% affective psychosis and 5% substance-induced psychosis) and 158 healthy controls. Categorical principal components analysis and analysis of variance were undertaken, and individual items with the highest loading were tested using the chi2 test.
Overall facial asymmetry, assymetry of the orbital landmarks, and frankfurt horizontal significantly differentiated patients with schizophrenia and affective psychosis from controls, as did a 'V-shaped' palate, reduced palatal ridges, abnormality of the left ear surface and the shape of the left and right ears. Patients with affective psychosis had significantly lowered eye fissures compared with control subjects.
MPAs are not specific to schizophrenia, suggesting a common developmental pathway for non-affective and affective psychoses. The topographical distribution of MPAs in this study is suggestive of an insult occurring during organogenesis in the first trimester of pregnancy.
MPAs were examined in 242 subjects with first-episode psychosis (50% schizophrenia, 45% affective psychosis and 5% substance-induced psychosis) and 158 healthy controls. Categorical principal components analysis and analysis of variance were undertaken, and individual items with the highest loading were tested using the chi2 test.
Overall facial asymmetry, assymetry of the orbital landmarks, and frankfurt horizontal significantly differentiated patients with schizophrenia and affective psychosis from controls, as did a 'V-shaped' palate, reduced palatal ridges, abnormality of the left ear surface and the shape of the left and right ears. Patients with affective psychosis had significantly lowered eye fissures compared with control subjects.
MPAs are not specific to schizophrenia, suggesting a common developmental pathway for non-affective and affective psychoses. The topographical distribution of MPAs in this study is suggestive of an insult occurring during organogenesis in the first trimester of pregnancy.
Description
Citation
Lloyd, T., Dazzan, P., Dean, K., Park, S. B., Fearon, P., Doody, G. A., Tarrant, J., Morgan, K. D., Morgan, C., Hutchinson, G., Leff, J., Harrison, G., Murray, R. M., & Jones, P. B. (2008). Minor physical anomalies in patients with first-episode psychosis: their frequency and diagnostic specificity. Psychological medicine, 38(1), 71–77. https://doi.org/10.1017/S0033291707001158
Publisher
License
Journal
Psychological medicine
Volume
38
Issue
1
PubMed ID
ISSN
0033-2917