Anxiety disorder is a blanket term covering several different forms of a type of mental illness, characterized by fear and anxiety abnormal and pathological. Conditions now considered anxiety disorders came under the aegis of psychiatry at the end of the nineteenth century. Current psychiatric diagnostic criteria recognize a wide variety of anxiety disorders. Recent studies also have found that up to 18% of the U.S. population and 20% of the Spanish population may be affected by one or more of these disorders have found that gene responsible for promoting the emergence and development of these is the same as that involved in the depressive disorders and bipolar .
The term anxiety covers four aspects that an individual may experience: mental apprehension, physical tension, physical symptoms and dissociative anxiety. Anxiety disorders in the DSM-IV are mainly divided into:
- Generalized anxiety disorder
- Panic disorder
- Obsessive-compulsive disorder
- Acute Stress Disorder
- Social phobia
- Phobic disorder
- Other disorders of anxiety or produced by unspecified substance.
Each has its own characteristics and symptoms and requires different treatments. The emotions present in anxiety disorders range from simple nervousness to bouts of terror or panic.
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