Hysteria is a psychological condition characterized by excessive emotional reactions, often manifesting as anxiety, panic, or uncontrollable laughter and crying. Historically, it was thought to primarily affect women and was linked to reproductive issues, but modern understanding recognizes it as a complex disorder that can affect anyone. The term has evolved over time, and today, it is often associated with conversion disorder, where psychological stress is expressed through physical symptoms. Treatment typically involves therapy, such as cognitive-behavioral therapy, to help individuals manage their symptoms and address underlying issues.