obsessive-compulsive reaction
noun
: obsessive-compulsive disorder
OCD is a disorder that has undergone significant revision and study since it was first recognized as "obsessive-compulsive neurosis" in the first edition of DSM. This definition was modified to "obsessive-compulsive reaction" in DSM-II and became the more familiar "obsessive-compulsive disorder" in DSM-III.—Sean A. Sassano-Higgins and Michele T. Pato, Focus
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Merriam-Webster unabridged
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