4.Psychiatric and behavioral issues
Patients with Down syndrome are genuine, very gentle, spontaneous, and charming. Unlike general thought, they are not like autistic children who are not social. They can understand social cues and can be very patient and tolerant. In some cases, they can also display some anxiety symptoms, but this is not the typical Down syndrome presentation. Up to 38% of them have overlapping psychiatric problems, especially attention deficit and hyperactivity disorder, disruptive or defiant behavioral disorders, and stereotypical movements with or without autism. In adults, an obsessive-compulsive disorder also becomes somewhat common.