obsessive compulsive disorder

This term is a clinical diagnosis used in psychiatric and medical contexts. While it is frequently shortened to the acronym OCD in casual conversation, the full phrase remains the standard for formal medical reports and diagnostic documentation.

In common parlance, the term is often misused as an adjective to describe someone who is merely meticulous or organized (e.g., "I'm so OCD about my desk"). However, in a clinical sense, it refers to a distressing and debilitating condition where the behaviors are not a choice or a preference, but a perceived necessity to alleviate intense anxiety.