Anxiety and stress are two of the most common types of mental disorders in the United States. The National Institute of Mental Health reports that 19 million Americans per year are afflicted by these illnesses. In Britain, the Office of National Statistics reported that approximately one in seven adults has some form of diagnosable mental disorder, with anxiety being the most commonly reported complaint.
Conditions associated with anxiety and stress include depression, phobias, and chronic fatigue.
Furthermore, accumulated stress and anxiety can predispose patients to medical conditions such as chronic headaches, hypertension, ulcers, and heart disease. Anxiety Disorders Anxiety disorders are illnesses that cause people to feel frightened and apprehensive for no apparent reason. These conditions are often related to the biological and psychological makeup of the individual and may be familial in nature. If untreated, these illnesses can significantly reduce productivity and inhibit a person's ability to function in daily life. There are five types of anxiety disorders.