Obsessive-compulsive disorder (OCD) is an anxiety disorder in which time people have recurring, unwanted thoughts, ideas or sensations (obsessions) that make them feel driven to do something repetitively (compulsions).
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2 ups, 5y
You mean CDO. The C and D are the third and fourth letters of the alphabet....O is way the heck down at the 15th position. Now way O comes first!