The person might feel that these actions somehow either will prevent a dreaded event from occurring or will push the event from their thoughts.
In any case, the individual's reasoning is so idiosyncratic or distorted that it results in significant distress for the individual with OCD or for those around them.
There is a debate as to whether or not hoarding should be considered with other OCD symptoms.
OCD sometimes manifests without overt compulsions, referred to as Primarily Obsessional OCD.
People rely on compulsions as an escape from their obsessive thoughts; however, they are aware that the relief is only temporary, that the intrusive thoughts will soon return.
Some people use compulsions to avoid situations that may trigger their obsessions.
Although some people do certain things over and over again, they do not necessarily perform these actions compulsively.
For example, bedtime routines, learning a new skill, and religious practices are not compulsions.
The observed groups included a "symmetry factor", a "forbidden thoughts factor", a "cleaning factor", and a "hoarding factor".
The "symmetry factor" correlated highly with obsessions related to ordering, counting, and symmetry, as well as repeating compulsions.