Obsessive compulsive disorder is a separate diagnostic entity, but it occurs in a number of other psychopathological entities.

We will present 22-years old adolescent. Early psychomotoric development was ordinary. Because of father's insisting, and against his own will, the patient has intensively played tennis since the age of six until his seventeenth. He was achieving good results but the father was constantly objecting that he is not showing enough fight spirit. When he was seventeen, after verbal conflict with father, he broke his racket and he stopped playing tennis.His father continued to play tennis and “everything is infected with earth from tennis court”. He hasn’t achieved emotional relationship, social contacts with peers are insufficient. At the age of twenty he has looked for psychiatric help, in order to get acknowledgment that he needs “peace for study” which he couldn’t get from his parents because he has constantly needed to clean.

Of this case report is to show obsessive compulsive actions as a defense from psychotic decompensation.

Psychiatric interview, mental status examination, psychological testing, EEG.

In the April, 2008 he has been hospitalized because his mental condition was worse due to suicidality. In clinical picture compulsions were dominant (throughout the nights he was cleaning the house, he has given away all the cloths in orange color, he has even “get rid of” his hamster because it was orange). He was tense, elevated mood, outdistanced and erotized.

Obsessive compulsive actions helped our patient to delay psychotic decompensation.