Where did stir crazy come from?

The term "stir crazy" originated in the early 20th century, referring to the psychological effects of confinement, particularly in prisons or other restricted environments. It describes the restlessness and agitation that can result from prolonged isolation or lack of activity. The phrase gained popularity in the 1930s, especially in American culture, and is often used to convey feelings of boredom or frustration due to being cooped up indoors for too long.