Developmental, behavioural and somatic factors in pervasive developmental disorders: preliminary analysis

Area of Science:

• Neurodevelopmental disorders
• Child psychology
• Pediatric medicine

Background:

• Pervasive developmental disorders (PDDs) encompass a range of neurodevelopmental conditions.
• Understanding intragroup differences in PDDs is crucial for targeted interventions.
• Parental reporting provides valuable insights into developmental trajectories.

Purpose of the Study:

• To determine the frequency of parental-reported developmental, behavioral, and physiological variables in PDD subgroups.
• To identify significant intragroup differences among autism, Asperger syndrome (AS), and autism spectrum disorder (ASD).

Main Methods:

• Retrospective cross-sectional analysis of 512 UK/Republic of Ireland patients aged 3-11 years with PDD diagnoses.
• Non-parametric analysis of parent-reported data on symptom onset, skill acquisition, regression, language, infections, continence, skin, bowel habits, and parturition events.
• Comparison of variable frequencies across autism, AS, and ASD subgroups.

Main Results:

• Asperger syndrome (AS) patients showed earlier skill acquisition (e.g., speech, toileting) and less skill regression compared to other PDD subgroups.
• Bowel and bladder continence achievement was more frequent in the AS group.
• Infantile feeding problems and a history of impetigo were more common in the AS group.

Conclusions:

• Parental reports reveal distinct patterns of developmental and physiological variables across PDD subgroups.
• AS may present with a unique profile of earlier skill attainment and specific somatic complaints.
• Further research into behavioral and somatic factor relationships in PDDs is warranted.