subject: what, really is autism? [print this page] If your child has autism s/he may be a high achiever or a low achiever depending on the severity of the disability and this is caused by the autism. Although you will receive a different answer, from different people when asked what this disability is put simply autism is considered a lifelong developmental disability. This causes the autistic child to have a different way of seeing, hearing, and feeling things. Autism generally causes difficulties with social interaction and communication.