A man with a brain disorder buys shopping while he's asleep

A man with a brain disorder says he is locked in a "nightmare" that sees him spend hundreds of pounds on shopping -- while he's asleep. Mark Doyle suffers from narcolepsy -- a rare brain disorder that causes him to suddenly fall asleep at any time. One of the symptoms of the illness is 'automatic behaviour' which means Mark can carry out everyday tasks such as cleaning, cooking and shopping while fast asleep. Mark, 46, from Neilston, East Renfrewshire, looks wide awake to others but is in fact fast asleep and completely unaware of what he's doing.