Compulsive behaviors Obsessive-compulsive trait HP:0008770 HP:0008761 UMLS:C1834433 The presence of one or more obsessive-compulsive personality traits. Obsessions refer to persistent intrusive thoughts, and compulsions to intrusive behaviors, which the affected person experiences as involuntary, senseless, or repugnant. Obsessive-compulsive trait Obsessions have been defined as intrusive and unwanted thoughts that are subjectively experienced as unacceptable. Obsessive-compulsive traits