Deaf children are children whose hearing organs are damaged to varying degrees. Due to damage to the hearing organs, children cannot perceive the world of sound, cannot hear speech and cannot form language. If hearing impaired children are detected early and cared for and supported with special methods, they will have the opportunity to develop their inherent abilities.

Autism spectrum disorder is a medical condition that impairs behavior, communication, and interaction with others. Autism spectrum disorder can be mild or severe. The cause is currently unknown.