The information
@tree posted is correct.
The term nervous breakdown used to be used for many mental disorders back in the 50's and 60's.
My Dad had what was termed that back in the early 60's.
It is not a medical term anymore.
Your definition of when your brain has been pushed past the normal state of mental and emotional
endurance is pretty accurate. But, the brain doesn't turn to mush.
I had my bout with severe anxiety disorder and depression, which in the older times would have been
called a nervous breakdown.
My experience was feeling such high anxiety I thought I was going to go wild and couldn't stand how it
made me feel. It was just there and I couldn't control it. Then there were the panic attacks that
seemed to come from nowhere. Sometimes hours of hyperventilating, thinking I was going to die.
No desire to eat and I didn't. Felt too fearful to leave my room.
I was Baker acted when I refused to get help. But, it saved my life.
I hated the doctor who did it, but, later felt grateful for what he did.
One last thing I see you mentioned shock therapy forced. That is against the law.
You must consent to shock therapy, ECT.
For me it wasn't because of an unliveable world, it was the world inside me I could not tolerate.
I made it through rough as it was. You can too.
We're here so might as well think of life as a roller coaster. Ups and downs.
Plot your course and take action for help.