Phobia overview

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Overview
Historical Perspective
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Causes
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [2]

Overview

A phobia (from Greek: φόβος, phobos, "fear"), is an irrational, intense, persistent fear of certain situations, activities, things, or persons. The main symptom of this disorder is the excessive, unreasonable desire to avoid the feared subject. When the fear is beyond one's control, or if the fear is interfering with daily life, then a diagnosis under one of the anxiety disorders can be made. Phobias (in the clinical meaning of the term) are the most common form of anxiety disorders.

Historical Perspective

Phobia is also used in a non-medical sense for aversions of all sorts. These terms are usually constructed with the suffix -phobia. A number of these terms describe negative attitudes or prejudices towards the named subjects. See Non-clinical uses of the term below.

Causes

It is generally accepted that phobias arise from a combination of external events and internal predispositions. In a famous experiment, Martin Seligman used classical conditioning to establish phobias of snakes and flowers. The results of the experiment showed that it took far fewer shocks to create an adverse response to a picture of a snake than to a picture of a flower, leading to the conclusion that certain objects may have a genetic predisposition to being associated with fear. Many specific phobias can be traced back to a specific triggering event, usually a traumatic experience at an early age. Social phobias andagoraphobia have more complex causes that are not entirely known at this time. It is believed that heredity, genetics, and brain chemistry combine with life-experiences to play a major role in the development of anxiety disorders and phobias.

Diagnosis

Physical Examination

Signs of phobia include elevated blood pressure and rapid heart rate

References