Beck’s cognitive theory of depression, defined the triad of irrational, negative beliefs about oneself, one’s future, and the world as ‘automatic thoughts.’ These automatic thoughts are central to many kinds of mood and anxiety disorders, including obsessive-compulsive disorder (OCD), where the obsession can manifest itself as thoughts producing feelings of fear, discomfort, and apprehension that are extremely disturbing, and often associated with death and illness, or unpleasant and embarrassing thoughts of sexual nature.
These thoughts are both irrational and intrusive, and cannot be ignored or denied. They also often accompany a belief that certain behaviors will prevent or reduce anxiousness, for example washing hands or counting. Such behaviors can become completely out of control, or compulsive. And because these thoughts respond so well to cognitive behavioral therapy (CBT), OCD tends to improve greatly once treated.