obsessive compulsive disorder
noun /əbˌsesɪv kəmˈpʌlsɪv dɪsɔːdə(r)/
  /əbˌsesɪv kəmˈpʌlsɪv dɪsɔːrdər/
 (abbreviation OCD)
 [uncountable]- a mental disorder in which somebody feels they have to repeat certain actions or activities to get rid of fears or unpleasant thoughtsTopics Illnessc2