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Obsessive–compulsive disorder (OCD) is a mental and behavioral disorder in which an individual has intrusive thoughts (an obsession) and feels the need to perform certain routines (compulsions) repeatedly to relieve the distress caused by the obsession, to the extent where it impairs general function. [1] [2] [7]
Psilocybin, a 5-HT 2C, 5-HT 2A and 5-HT 1A receptor agonist has been associated with acute improvement of OCD symptoms. In vivo neuroimaging has found abnormalities with 5-HT 2A and serotonin transporter (5-HTT). Inconsistent binding potentials have been observed for 5-HT 2A, with both decreased and increased and binding potentials being ...
The cause of obsessive–compulsive disorder is understood mainly through identifying biological risk factors that lead to obsessive–compulsive disorder (OCD) symptomology. The leading hypotheses propose the involvement of the orbitofrontal cortex , basal ganglia , and/or the limbic system , with discoveries being made in the fields of ...
Trichotillomania (hair-pulling disorder) moved from "impulse-control disorders not elsewhere classified" in DSM-IV, to an obsessive-compulsive disorder in DSM-5. [ 11 ] A specifier was expanded (and added to body dysmorphic disorder and hoarding disorder) to allow for good or fair insight, poor insight, and "absent insight/delusional" (i.e ...
The only diagnosis existing in DSM-5 is obsessive–compulsive disorder. [2] According to DSM-5 compulsions can be mental, but they are always repetitive actions like "praying, counting, repeating words silently". [26] DSM-5 does not have any information that searching an answer for some question can be associated with OCD. [27]
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The word was also used to distinguish a condition considered a disorder of the mind, as opposed to neurosis, which was considered a disorder of the nervous system. [153] The psychoses thus became the modern equivalent of the old notion of madness , and hence there was much debate on whether there was only one (unitary) or many forms of the new ...