Even Dave Mustaine couldn?t have imagined how influential the lyrics in the Megadeth song, Tout Le Monde, would become. And one can simply imagine, a bemused Dr. House sitting alone in their office, together with his headphones plugged in, and the same song blaring from it. Trying to overlook the pain in his leg and in the mind from his failed relationship with Dr. Cuddy, House is almost repentant, almost! Psoriatic arthritis, an inflammatory joint disease that affects psoriatic patients.