I've been doing some detox and have had burning kidneys (painful, almost like stones) and I could feel a burning sensation between my kidneys and bladder (the connective tube?). Then the urine would burn on the way out.
I've been alternating fasting and iodine.
after one "burning" session, I had the cloudy brown sediment that is supposedly bromide. This has actually happened several times to varying degrees.
After one "burning" session that was keeping me awake with kidney stone like pains, I did the Epsom Salt bath and the pain went away and I was able to sleep.