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OCD is when a person experiences extreme or unreasonable terror when confronted with a certain object, situation or activity. This terror can lead to a strong need to avoid that object or situation.
What is false; this would be specific phobias. OCD is when a person has recurring, unpleasant thoughts (these are called obsessions), like thinking their hands are always dirty. As a result, they may develop repetitive and time-consuming behaviours to try and reduce anxiety or distress (these are called compulsions), like washing their hands hundreds of times a day.