I’ve never had that, but I was hospitalised in Fort William on the mainland and filled up with iv antibiotics because of a gall bladder infection. Initially they misdiagnosed it as a heart attack, or just were very cautious, and helicoptered me to Inverness. The local doctors were misled because the pain was so bad that they saw heart traces and had to knock me out completely - initially injected me with something at Broadford hospital, on the island, which made me lose consciousness, to escape the pain. Then it was a wonderful free chopper ride over the mountains. The iv antibiotic injections were lovely, very warming pleasant feeling going through my veins, like having a whisky, and then I felt like I was sunbathing, as if bright sunlight was hitting my skin and lay on a towel for half an hour because if the warmth. But then I was never in a bad state like yourself at that time. Had to have major surgery to remove gall bladder later though after the infection had been brought under control.