Scarlet rot is a destructive disease or status effect in the video game Elden Ring, and is also the name of a deathcore band. In Elden Ring, it is a dangerous, fast-acting affliction that damages health over time and can cause madness and physical deformation. The disease is tied to an Outer God of Rot and is famously spread by the demigod Malenia, whose use of it has transformed the Caelid region into a mutated wasteland.