People often say that they’re “so OCD,” as a sign of their preference for cleanliness, order, or perfection. But there are key differences, and the two shouldn’t be conflated. The essential distinction is that OCD becomes a disorder when symptoms interfere or impair a person’s ability to function socially, professionally, or academically.
For example, someone with OCD might be chronically late for work, and maybe fired, if compulsions prevent them from leaving the house. In a family context, someone with OCD may avoid being home alone with their children, for fear that they will suddenly harm or kill their children.