There are many<unk> , ranging from concurrent psychiatric<unk>  and neuroinflammation to a variety of colon and digestive<unk> .  In medicine and in psychiatry,<unk> ity describes the effect of other diseases an individual patient might have other than the primary disease of interest.  About 10–15% of autism cases have an identifiable Mendelian (single-gene)<unk>  chromosome abnormality, or other genetic syndrome, and ASD is associated with several genetic<unk> . However, autism and other autism<unk>  diagnoses, including Asperger syndrome, are diagnosed strictly as a cognitive disability, as a brain<unk> that begins in early childhood, persisting throughout adulthood, and affecting three crucial areas of development: communication, social interaction and creative or imaginative play.
Conditions comorbid to autism spectrum disorders
Causes of autism
Autism pathophysiology
Mental retardation pathophysiology
Asperger syndrome pathophysiology
Attention-deficit hyperactivity disorder pathophysiology
Persistent motor or vocal tic disorder
Major or mild neurocognitive disorder due to Parkinson's disease