Disorder

Disorder may refer to randomness, a lack of intelligible pattern, or:

Healthcare

 * Disorder (medicine), a functional abnormality or disturbance
 * Mental disorder or psychological disorder, a psychological pattern associated with distress or disability that occurs in a person and is not a part of normal development or culture:
 * Anxiety disorder, different forms of abnormal and pathological fear and anxiety
 * Conversion disorder, neurological symptoms such as numbness, blindness, paralysis, or fits, where no neurological explanation is possible
 * Obsessive–compulsive disorder, an anxiety disorder characterized by repetitive behaviors aimed at reducing anxiety
 * Obsessive–compulsive personality disorder, obsession with perfection, rules, and organization
 * Personality disorder, an enduring pattern of inner experience and behavior that deviates markedly from the expectations of the culture of the person who exhibits it

Law enforcement

 * Civil disorder, one or more forms of disturbance caused by a group of people
 * Lawlessness, a lack of laws or law enforcement

Science

 * Crystallographic disorder, disordered atom locations in crystals
 * Order and disorder

Films

 * Disorder (1962 film), a film by Franco Brusati
 * Disorder (2006 film), a psychological thriller by Jack Thomas Smith
 * Disorder (2009 film), a Chinese documentary
 * Disorder (2015 film), a French film

Music

 * "Disorder", a song by Joy Division from the 1979 album Unknown Pleasures
 * Disorder (EP), an EP by Front Line Assembly
 * Disorder, a Bristol-based hardcore punk band
 * Disorder (album), an album by The Gazette

Mail order

 * Dis-order, the mail order service of Displeased Records