People with mental illness are very difficult to control. They live in their own world, that exists only in their mind. Their moods can change at any time, are emotionally unstable and can’t control their reactions. This mental problem trigger after a trauma , or an powerfull emotional shock. Depression, nervousness, sadness and suicidal thoughts are present in mentally ill. Psychologist therapies cand relieve problems, and in the worst case will be necessary psychiatric hospitalization. A person with serious deviations should not be left in freedom , because it represents a social danger .