Also known as: Poison ivy
Initial misdiagnosis of Sister Augustine's hand rash, attributed to dish soap allergy. Later revealed to be part of a systemic allergic reaction.
Also known as: Severe allergic reaction
Sister Augustine experiences multiple episodes of severe anaphylactic reactions, including cardiac arrest after antihistamine, respiratory distress requiring epinephrine, and anaphylactic shock in the clean room. Central to the diagnostic mystery of the episode.
Also known as: Copper hypersensitivity
The actual diagnosis and central medical mystery of the episode. Sister Augustine's severe systemic allergic reaction caused by prolonged exposure to a copper IUD embedded in her endometrial tissue since age 15, triggered by contact with copper cookware.
Also known as: HSE, brain infection from herpes
Sister Augustine develops herpetic encephalitis as a complication of her compromised immune system from the prednisone treatment, causing hallucinations of Jesus and seizures during the CT scan.
Also known as: IBD
Brief clinic case where House controversially prescribes cigarette smoking to a patient with inflammatory bowel disease who has failed multiple conventional treatments.