Final answer:
The most frequently occurring co-occurring disorder in individuals with Autism Spectrum Disorder (ASD) is intellectual disability. Other co-occurring disorders that frequently occur in individuals with ASD include epilepsy, ADHD, anxiety disorders, and depressive disorders.
Step-by-step explanation:
The most frequently occurring co-occurring disorder in individuals with Autism Spectrum Disorder (ASD) is intellectual disability. Intellectual disability is characterized by limitations in intellectual functioning and adaptive behavior. It is estimated that around 40-70% of individuals with ASD also have intellectual disability.
Other co-occurring disorders that frequently occur in individuals with ASD include epilepsy, attention deficit hyperactivity disorder (ADHD), anxiety disorders, and depressive disorders.
It is important to note that not all individuals with ASD will have co-occurring disorders, and the presence of co-occurring disorders can vary widely among individuals.