In the Christmas-themed "Damned If You Do" (Season 1, Episode 5), House treats a nun with severe allergies, which are initially mistaken for a miracle, leading to a investigation into his medical practices. The episode focuses on diagnosing the true, underlying cause of her allergic reaction while dealing with a malpractice threat. You can watch this episode of House on Hulu or Amazon Prime Video . "House" Damned If You Do (TV Episode 2004) - IMDb