Main features of White-Sutton syndrome (WHSUS) are autism, delayed motor and speech development, and mild to severe intellectual disability. Other features are a small head circumference (microcephaly), feeding problems/ and or problems with the stomach and/or intestines, tendency to obesity and visual problems. Some children or adults have epilepsy, sleeping problems and/or other behavioural problems besides autism, such as hyperactivity. Despite their autism, many patients have a seemingly contrary overly social and friendly demeanour. Very few children are born with structural heart, brain or kidney abnormalities.