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The onset of claustrophobia has been attributed to many factors, including a reduction in the size of the amygdala, classical conditioning, or a genetic predisposition to fear small spaces. One study indicates that anywhere from five to ten percent of the world population is affected by severe claustrophobia, but only a small percentage of ...
The English suffixes -phobia, -phobic, -phobe (from Greek φόβος phobos, "fear") occur in technical usage in psychiatry to construct words that describe irrational, abnormal, unwarranted, persistent, or disabling fear as a mental disorder (e.g. agoraphobia), in chemistry to describe chemical aversions (e.g. hydrophobic), in biology to describe organisms that dislike certain conditions (e.g ...
Chronophobia and other phobias are caused by a combination of environmental and genetic factors. Chronophobia can develop as a result of being imprisoned, having a fatal illness, or surviving a traumatic experience. People who suffer from anxiety or suffer from mental illness are more likely to develop phobias.
The knock-on psychological effects of the situation could include a growing sense of claustrophobia, leading to increased heart rates, light-headedness, nausea and panic attacks, which could cause ...
Having a close family member affected by a mental illness is the largest known risk factor, to date. [6] However, linkage analysis and genome-wide association studies have found few reproducible risk factors. [1] Heterogeneity is an important factor to consider when dealing with genetics. Two types of heterogeneity have been identified in ...
Epigenetics of anxiety and stress–related disorders is the field studying the relationship between epigenetic modifications of genes and anxiety and stress-related disorders, including mental health disorders such as generalized anxiety disorder (GAD), post-traumatic stress disorder, obsessive-compulsive disorder (OCD), and more.
The mechanisms for development of specific phobias can be distinguished between innate (genetic and neurobiological) factors, and learned factors. In neurobiology, one explanation proposed for specific phobia is that the typical activation of the amygdala in response to stimuli may be exaggerated due to pathological changes.
Evolutionary psychiatry, also known as Darwinian Psychiatry, [1] [2] is a theoretical approach to psychiatry that aims to explain psychiatric disorders in evolutionary terms. [3] [4] As a branch of the field of evolutionary medicine, it is distinct from the medical practice of psychiatry in its emphasis on providing scientific explanations rather than treatments for mental disorder.