Obsessive–compulsive personality disorder

Personality disorder involving orderliness

Obsessive–compulsive personality disorder (OCPD) is a personality disorder marked by a spectrum of obsessions with rules, lists, schedules, and order, among other things. Symptoms are usually present by the time a person reaches adulthood, and are visible in a variety of situations. The cause of OCPD is thought to involve a combination of genetic and environmental factors, namely problems with attachment, but in some individuals there may be a link to brain trauma or Parkinson's disease.

From Wikipedia, under CC BY-SA. More on occurri.