I've experienced a number of healings over the last 20 years, of different sorts.
The closest that I came to a "documented" healing was when I fractured my kneecap and tore some of the ligament away from the kneecap.
I ended up in a plaster cast from my ankle to my thigh. I was going to have to wear this for six weeks; and I was scheduled to travel to America about four weeks into this six week period!
Somehow, I wasn't concerned about my knee and travel plans, despite the fact that it would cause a lot of difficulties.
One evening - after I'd had the cast on for about a week or two - I was praying for a friend for the healing of some emotional issues that were haunting her from her childhood.
As I prayed in tounges, with my hand over her head I suddenly felt like fire or massive pins and needles rushing up and down my leg; and I knew immediately that my leg had been healed.
Some friends took me to the hospital the next day where I told the staff that God had healed me, and I managed to convince them to cut the cast off.
The doctor said, "get up and walk then, as they say...", which I did right out of the hospital. But the word had spread around that part of the hospital about some "nut"

claiming God had healed him; so as I walked out a number of nurses had gathered in the corridor to watch me walk out.
As a post script, the friend I had been praying for was not healed. In fact a couple of years later she committed suicide. I cannot fathom why God heals some but not others. None of us deserve healing, but when it is received; we should be thankful indeed.