Brain Differences Linked To Autism Could Be Spotted Three Months Before Birth How early would you think a person could be diagnosed with autism? At the moment, the very earliest someone is likely to get a diagnosis is around 18 months old. Before that, babies are all kind of the same when it comes to communication and social interaction (which is to say, they all suck at it), making it difficult to judge which ones are better or worse at things like interpreting verbal and non-verbal language. And since there’s no physical test that can show us the presence of autism any earlier than that, there’s – wait, what? A brain scan might be able to show us the presence of autism before birth? |