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OCD Explaination. - Coggle Diagram
OCD Explaination.
Genetic explanation.
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The COMT gene:
- This gene may be involved in the onset of OCD.
- The COMT regulates the production of the neurotransmitter dopamine that has been implicated in OCD.
- A form of COMT gene has been found to be more common in OCD patients than with people without the disorder.
Tukel et al 2013.
Claims that the COMT gene produces higher levels of dopamine that may led to an increase in likelihood of an individual having OCD.
The Sert Gene:
- This gene is thought to affect the transport of serotonin creating lower levels of the neurotransmitter.
- These change the levels of serotonin are also implicated in OCD.
Ozaki et al 2003.
Found that a mutation of this gee in two unrelated families where six of the seven family members has OCD.
Diathesis-stress.
- The idea of a simple link between one gene and OCD is unlikely.
- Genes such as SERT gene are also implicated in a number of other disorders like depression.
- This suggests that certain genes create vulnerability for OCD and other conditions to appear.
- Thus, explaining why some people have these genes but do not develop OCD.
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Diagnostic criteria.
A clinical diagnosis is given if there can be no other physiological cause or if the symptoms can be better accounted for by another disorder. The OCD sufferer recognises that their behaviour is unreasonable, otherwise they could have schizophrenia.
A diagnosis is given if:
- A person has persistent thoughts etc that are experienced as intrusive and inappropriate and they cause anxiety, and they are not excessive worries about real life problems
- A person displays repetitive behaviours or mental acts in response to an obsession. They are not connected in any realistic way to what they are designed to prevent, they are excessive.
- The person recognises that these obsessions or compulsions are excessive or unreasonable.
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