Anxiety pathophysiology: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
|||
| Line 18: | Line 18: | ||
** Hyperactivity of amygdala has been implicated in social anxiety | ** Hyperactivity of amygdala has been implicated in social anxiety | ||
* Psychoanalytic component: | * Psychoanalytic component: | ||
* Freud described that anxiety is developmentally related to childhood fears of disintegration that derive from the fear of actual or imagined loss of a love object or fear of bodily harm. | ** Freud described that anxiety is developmentally related to childhood fears of disintegration that derive from the fear of actual or imagined loss of a love object or fear of bodily harm. | ||
** He used the term "signal anxiety" to describe anxiety that triggers defense mechanisms used by the person to cope with the potential threat, but anxiety infact, is not consciously experienced. | ** He used the term "signal anxiety" to describe anxiety that triggers defense mechanisms used by the person to cope with the potential threat, but anxiety infact, is not consciously experienced. | ||
| Line 25: | Line 25: | ||
** The anxiety eventually becomes a conditioned response to stress ful situations of less severity | ** The anxiety eventually becomes a conditioned response to stress ful situations of less severity | ||
* Genetic studies | * Genetic studies | ||
** | ** About 5% individuals with anxiety have polymorphic variant of the gene associated with serotonin transporter metabolism. | ||
==References== | ==References== | ||
Revision as of 17:25, 16 August 2017
|
Anxiety Microchapters |
|
Diagnosis |
|---|
|
Treatment |
|
Case Studies |
|
Anxiety pathophysiology On the Web |
|
American Roentgen Ray Society Images of Anxiety pathophysiology |
|
Risk calculators and risk factors for Anxiety pathophysiology |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1];Template:AeVindhya BellamKonda, M.B.B.S [2]
Overview
Pathophysiology
Various theories have been implicated in the pathogenesis of anxiety which are as follows:
- Biologic component:
- There is an increased sympathetic tone
- There is a surge of catecholamines
- Decreased levels of Gamma -aminobutyric acid(GABA)
- Alterations in serotonergic and dopaminergic system
- In anxiety states like panic attacks, the locus ceruleus is hyperactive
- Hyperactivity of amygdala has been implicated in social anxiety
- Psychoanalytic component:
- Freud described that anxiety is developmentally related to childhood fears of disintegration that derive from the fear of actual or imagined loss of a love object or fear of bodily harm.
- He used the term "signal anxiety" to describe anxiety that triggers defense mechanisms used by the person to cope with the potential threat, but anxiety infact, is not consciously experienced.
- learning theory
- Anxiety is produced due to continued stress.
- The anxiety eventually becomes a conditioned response to stress ful situations of less severity
- Genetic studies
- About 5% individuals with anxiety have polymorphic variant of the gene associated with serotonin transporter metabolism.