There are many conditions, such as the mentally ill. More species are:

* Anxiety disorders: People with anxiety disorders to certain objects or situations of fear and terror, but also with physical signs of anxiety or nervousness, a rapid heartbeat and sweating. An anxiety disorder is diagnosed when the person, the answer is not adequate to the situation if the person can not be the answer, or if the fear of interference with normal operation. Anxiety disorders, the generalized anxiety disorder, post-traumatic stress disorder (PTSD), obsessive compulsive disorder (OCD), panic disorder, social anxiety disorder and specific phobias.

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