Burden of Co-occurring Conditions and Perinatal Predictors of Epilepsy in Autism Spectrum Disorder: A Cross-Sectional Study of 1015 Children From Northwestern Mexico.

Of 1,015 children, 83.3% were male (ratio 4.9:1).

Median co-occurring condition burden was 3 per patient (IQR 2-4); 58.3% had ≥ 3 simultaneous co-occurring conditions.

Language disorder was most prevalent (91.2%), followed by feeding/gastrointestinal disorders (69.8%), sleep disorders (63.2%), ADHD (33.8%), anxiety (12.9%), epilepsy (8.9%), and depression (3.0%).

ADHD was inversely associated with ASD severity (OR = 0.71; p = 0.015) and positively with higher intellectual functioning (p = 0.016).