What is the origin of the idiom "nervous wreck" and when to use it?

The phrase "nervous wreck" is an idiomatic expression used to describe someone who is extremely anxious, stressed, or emotionally overwhelmed. The term "wreck" in this context refers to a state of complete disarray or distress. It is used to describe individuals who are highly agitated, anxious, or emotionally unstable. It suggests that the person is experiencing extreme nervousness or mental strain.