Background: Recent investigations suggest a possible common genetic background between Autism Spectrum Disorders (ASD) and Celiac Disease (CD). However, studies regarding this association are scarce and often limited by the small sample sizes and/or large heterogeneity among ASD groups in terms of demographic and clinical features. The present study aims to investigate the overall CD prevalence (biopsy proven-CD patients plus screening detected tTG and EMA positive cases) in a large population of pre-schoolers with ASD referred to a tertiary care University Hospital.
Methods: We retrospectively collected data about 382 children (mean age: 46.97 ± 13.55 months; age-range: 18-72 months) consecutively diagnosed as ASD (according to the Diagnostic and Statistical Manual of Mental Disorders 4th edition criteria) over the period 2010-2013, and who performed a serological CD screening.
Results: The overall CD prevalence was 2.62%, which is statistically significant higher to that reported in the Italian paediatric population (p = 0.0246). Half of these children had no symptoms or risk factors related to CD when they performed the serological screening.
Conclusions: If replicated, these data suggest the importance of regular screening for CD in young patients with ASD, and are of relevance for clinical and public health.
Keywords: Autism Spectrum Disorders; Autoimmune disease; Celiac Disease; Epidemiology; Gastrointestinal symptoms; Pre-schoolers; Screening; Young children.