Disorient

Disorient, previously called Confusion or Knockout, and more rarely referred to as Mesmerize, is an incapacitating crowd control effect which prevents the target from taking any action for a certain period of time, although unlike stuns, disorient effects will break on damage. Disorient effects cause the target to wander about in a confused fashion for the duration of the effect. This makes disorient effects different from sleep and other incapacitate effects, in which the target doesn't move.

Examples of disorient effects:
 * Hunter: Scatter Shot
 * Mage: Dragon's Breath (Talent)
 * Priest: Holy Word: Chastise
 * Rogue: Blind

Counters
Ways to remove disorient effects include:
 * PvP Trinkets
 * Mage: Ice Block
 * Paladin: Divine Shield
 * Hunter pets with the Bestial Wrath talent are immune to Disorient.