Healing Pool

There was a young man who was very ill; I was in a kind of hospital and seemed to know him. It was decided that he should be put onto a kind of pully system that looked like a bed with chains attached to the top. He was lowered down into a pool of acid, which was apparently very good for him.

What does this mean?

Illness: A warning of some great temptation that will not work out favourably for you, however promising it appears at first/You are in danger of being cheated
Chains: A dream of contrary, showing that you will escape from some difficulty that is worrying you at the moment
Hospital: If you are in a hospital or infirmary, someone you consider a friend is out to harm you