3. Occam's Razor

Complete story — includes the ending

A college student named Brandon ( Kevin Zegers ) collapses after having sex with his fiancée. His symptoms seem too numerous to be explained by just one disease. Foreman and House suggest different diagnoses with each one arguing that his own respective theory better conforms to Occam's razor. But then Brandon's white blood cell count drops, proving both doctors wrong. At the clinic pharmacy, House theorizes that the pharmacist accidentally gave Brandon colchicine instead of cough medicine, which explains all of his symptoms aside from his cough. House gives Brandon the cure, and he immediately begins to recover, though nobody believes the pharmacist made a mistake. However, when Brandon comments that his old cough medicine did not have letters on it like his current pills, House discovers colchicine pills that look similar to cough medicine, revealing the source and confirming House's diagnosis. Final diagnosis: Colchicine poisoning and mild chest infection