[Investigation of neurodevelopment delay etiology: resources and challenges].

To verify the reach of development delay investigation, we brought the experience in the pediatrics, infantile neurology and clinical genetics diagnoses, with resources of a tertiary health care, in 73 children, from 1 to 47 months age, between 1999 and 2001, attending a Stimulation Program of the Association of Parents and Friends of Exceptional Children of Batatais-SP. With a transversal and prospective method, six groups were identified: motor disturbances, dysmorphisms, malnutrition, macrocephaly, microcephaly and motor delay. In the analysis of the contribution of the antecedents, physical or laboratory exams to the diagnosis, it stands out the brain image in the groups "motor disturbances" and "macrocephaly"; and for the remaining groups, the physical examination and maternal data. The causes were detected in 48 (66%), being 38.4% of environmental and 24.6% genetics origin. It is emphasized the specialist evaluation, and the need of appropriate flow of information in the net of health.