What do you call people who obsessively count in their minds all the time?

People who obsessively count in their minds may be exhibiting symptoms of a condition known as obsessive-compulsive disorder (OCD). This behavior can also be referred to as "mental counting" or "internal counting," where individuals feel compelled to count objects, actions, or events to reduce anxiety or achieve a sense of control. While not everyone who counts mentally has OCD, it can be a common manifestation of the disorder.