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Obsessions are repetitive, clearly excessive behaviors or mental acts that the person feels driven to perform to reduce the anxiety caused by obsessive thoughts. Obsessive-compulsive disorder. Characterized by obsessions or compulsions.
Hoarding Disorder is a persistent difficulty discarding or parting with possessions, regardless of the value others may attribute to these possessions. Body Dysmorphic Disorder is a recurrent skin picking resulting in skin lesions.
Trichotillomania (Hair-Pulling Disorder) is a recurrent pulling out of one’s hair, resulting in hair loss. Obsessions are intrusive and recurring thoughts, images, or impulses that are persistent and uncontrollable.
OCD tends to begin either before age 10 or else in late adolescence/early adulthood. BDD occurs slightly more often in women than in men
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Brain-imaging studies indicate that three closely related areas of the brain are unusually active in people with OCD: Orbitofrontal cortex, Caudate nucleus, Anterior cingulate. There is a very low genetic contribution to OCD when it comes to heritability.
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Behavioral models emphasize classical conditioning of compulsions. Obsessions are reinforced because they reduce anxiety.
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Many people with BDD seem to believe that their self-worth is not exclusively dependent on their appearance. Cognitive models of BDD focus on what happens when a person with this syndrome looks at his or her body.
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