Abstract:
The co-occurrence of Down Syndrome (DS) and Autism Spectrum Disorder (ASD) in toddlers is a complex and relatively rare condition. While the prevalence of both Down Syndrome and ASD varies by region and is more well-documented in high-income countries, it is essential to recognize that children with these conditions exist globally. Down Syndrome affects approximately 1 in 1,000 live births and is consistent worldwide, whereas the prevalence of ASD varies, with estimates of 1-2% in high-income countries. The co-occurrence of Down Syndrome and ASD is less common, with estimates ranging from 5% to 18%. Access to healthcare, early intervention, and diagnostic services significantly impact the identification and support for children with both conditions, and disparities in access exist between high-income and low-income countries. Efforts to improve early identification, access to healthcare, and interventions for children with these co-occurring conditions should be a global concern to ensure that all children receive the support they need, regardless of their geographic location or socioeconomic status.