A mysterious ailment is spreading across the United States, but no everyone is sure that it's real. It's called Morgellon's disease, and since it was first written about in 2002, the number of people who claim they suffer from it - most find each other online - has grown exponentially. Brigid Schoolte is a reporter for the Washington Post who recently wrote a long piece about Morgellons. She speaks to Faith on Fair Game from Washington.