NCIt definition : A series of actions or ritualistic behavior that is difficult to suppress and is performed
to relieve or prevent anxiety.;
Alternative definition : NICHD: A series of actions or ritualistic physical or mental behavior that is difficult
to suppress and is performed to relieve or prevent anxiety.; NCI-GLOSS: An uncontrollable urge to say or do something without an obvious reason.
A person may repeat a behavior, such as hand-washing, over and over.;