I've heard that PTSD wasn't well understood in the 1800s and simply classified as "mania". Are there any diaries or first-hand accounts from Civil War soldiers talking about PTSD? And how was PTSD treated by doctors of the time? Thank you!
There's certainly plenty of room to discuss PTSD in the context of the Civil War, but while you're waiting for detailed responses, you might like to review our FAQ – which has a section devoted to historical awareness and treatment of post-traumatic stress (and the lack of it). The first section of the link below should supply some helpful context for your query.
FAQ: Military history - general - post traumatic stress disorder