Sickness

Sickness may refer to:


 * Disease
 * Nausea
 * Sickness behavior

Other uses

 * The Sickness, 2000 album by Disturbed
 * The Sickness (novel), 1999 book in the Animorphs series
 * Corey Taylor, nicknamed "The Sickness", American heavy metal musician
 * (sic)nesses, 2010 video album by Slipknot