House Season 1 Episode 5 : Damned If You Do

A nun whose hands are red, swollen and cracked is sent to House. The nun believes it is stigmata, but House suspects an allergic reaction. He gives her some pills, which cause her to become unable to breathe. As her condition worsens, her fellow sisters pray for her while House and his team work to discover the cause of her illness while House has to wonder if he misadministered the illness.