I'm really sorry to hear this.

The nearest I came to anything like that was when one of my son's was two years old, he was unwell and stopped breathing. At the hospital my husband and I were put into separate rooms and questioned, to see if we had abused him. He actually had an ear infection, his temperature had risen very quickly and he had a febrile convulsion. He doesn't remember any of it now and it is nothing compared to what you are experiencing - but it was bad enough, so goodness only knows how you and your son must be feeling.

It is dreadful that your son was subjected to such emotional trauma. I would definitely pursue this and get some advice on what to do.