"Like fingernails on a blackboard" - what it's like to live with Asperger's

Nearly half a million adults in the UK have autism, but haven't been diagnosed, according to new research.

This week on Breakfast we're taking a closer look at what it's like to live with the condition some call an invisible disability.

We met Chris Goodchild, who wasn't diagnosed with Asperger's syndrome until the age of 42.