Abstract
John, a machinist, held out his arms. “I have developed this rash in the past couple of days. My eyes are itching, and my nose is running. I have never had allergies. Has anything changed in the manufacturing materials lately? I think I might be allergic to something.” After confirming that no changes had been made, Lois, the occupational health nurse, explored further. John's finished basement flooded a month ago and he was currently in the process of removing old sheetrock and carpet. Lois began to consider the possibility that exposure to mold at home might be the cause of John's rash.
