obsessive-compulsive disorder
US /əbˌses.ɪv.kəmˈpʌl.sɪv dɪsˈɔːr.dər/
UK /əbˌses.ɪv.kəmˈpʌl.sɪv dɪsˈɔːr.dər/

1.
a mental health condition characterized by intrusive thoughts (obsessions) and repetitive behaviors (compulsions) that the person feels driven to perform.
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She was diagnosed with obsessive-compulsive disorder after years of struggling with repetitive handwashing.
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Treatment for obsessive-compulsive disorder often involves therapy and medication.
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