Obsessions

Obsessions are recurring thoughts, fantasies, impulses or anxiety that feel intrusive, disturbing, meaningless and sometimes completely unbearable. These thoughts are associated with anxiety, fear and great discomfort and have the ability to completely dominate the normal thought process. Although these thoughts are perceived so negatively, you feel compelled to think about them.

The thoughts are perceived to be "true" and "real" while you have them, although afterwards or at other times you often realize that they were much exaggerated and could lead to major problems.