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The etiologic patterns in microcephaly with mental retardation.

K M Prasad1, S R Girimaji, K R Manjunatha

  • 1K.M.R. Prasad, MD., DNB(Psy), Senior Resident, Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bangalore 560 029.

Indian Journal of Psychiatry
|July 12, 2011
PubMed
Summary

This study investigated the causes of microcephaly with mental retardation in Indian children. Most cases had identifiable, often preventable, causes, highlighting the importance of early interventions.

Keywords:
etiologymental retardationmicrocephaly

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Area of Science:

  • Pediatrics
  • Neurology
  • Genetics

Background:

  • Microcephaly with mental retardation is a distinct subgroup of developmental disorders.
  • Limited research exists on the etiology of this condition in India.
  • Understanding causes is crucial for prevention and management strategies.

Purpose of the Study:

  • To investigate the demographic and clinical characteristics of children with microcephaly and mental retardation.
  • To determine the etiologic patterns in this patient population in India.
  • To identify potential areas for intervention and prevention.

Main Methods:

  • A cohort of 82 children diagnosed with microcephaly and mental retardation was studied.
  • Comprehensive clinical assessments and a range of investigations were performed.
  • Etiologies were categorized into prenatal (embryonic, maternal/environmental) and birth/neonatal causes.

Main Results:

  • A definite etiology was identified in 56% of the children.
  • Non-genetic causes predominated, with prenatal factors being twice as common as birth/neonatal causes.
  • Neurological disorders and severe malnutrition were significantly associated with this group.

Conclusions:

  • A significant proportion of microcephaly with mental retardation cases in India have identifiable etiologies.
  • Many identified etiologic factors are preventable, emphasizing the role of public health initiatives.
  • Socio-environmental factors play a notable role, underscoring the need for targeted interventions.