Over 70% of autistic children have gastrointestinal (GI) symptoms, such as diarrhea, constipation, and abdominal pain. It can be difficult for children with autism and language delays to show their discomfort and communicate symptoms. They might act out or have problems sleeping instead.
To make things even more challenging, children with autism often have feeding problems such as selective eating (see A parent’s guide for picky and selective eaters). Children with a limited diet can experience issues such as constipation and intestinal microbiota (more on microbiota later in the article)!