PS280 Study Guide - Midterm Guide: Obsessive–Compulsive Disorder, Body Dysmorphic Disorder, Trichotillomania
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Obsessive Compulsive Disorder:
-includes diagnsosis of OCD, body dysmorphia disorder (BDD), hoarding disorder, trichotillomania
(hair pulling disorder), and excoriation (skin-picking disorder)
-one year prevalence is 1%, lifetime prevalence is 3%
-approx 8% of OCD patients also have BDD
-individuals w OCD have excessive feelings of guilt + inflated sense of responsibility for their
thoughts, and the more responsible they feel for the content of their thoughts, the worse they feel
-obsessions: recurrent and uncontrollable thoughts, impulses, or ideas that individual finds anxiety
provoking (uncertainty, sexuality, violence, contamination)
-compulsions: repetitive behaviours and cogntive/mental acts intended to reduce anxiety (handwashing,
checking, praying, repeating words)
-approx 80% of patients exhibit both behavioural and mental compulsions
-neutralizations: deal w anxiety through acts used to try to prevent, cancel, undo feared consequences
and distress caused by an obsession, normal and common activity
Thought-action fusion (TAF): tendency to fuse thoughts and behaviours together
-two types of irrational thinking: (1) having particular thought increases probability that the thought
will come true; (2) having a particular thought is the moral equivalent of a particular action
Diagnosis:
-presence of either obsessions or compulsions (may occur in isolation, occur together 96% of time)
-factors that distinguish obsessions from worries: obsessions more bizarre, involve more imagery