Early signs of autism include continually repeating words or phrases, becoming upset by small changes, delayed language skills, avoiding eye contact and having obsessive interests, according to the CDC. Some children with autism develop normally for a while and then stop developing new skills, or they lose skills previously learned.
Additional early signs of autism include a lack of responsiveness and engagement, having difficulty understanding and expressing feelings, unusual and repetitive body movements, giving unrelated answers to questions, and having strange reactions to stimuli, according to the CDC. Autism is present when a child is born, however the disorder’s signs are often difficult to identify during infancy, according to WebMD. Signs become more apparent as the child approaches the toddler stage.