You may or may not read this post. But I have been told I have polyps and have had pain in the area (really bad at the beginning) for now over 1.5 years. Originally I experienced a very odd skin prickling sensation which went on for about 3 months. Started on the back of my hands and then slowly manifested over time on more areas of my body. But at the time I had just started some chinese herbs, tried one round of acupuncture and stops all meats.
I knew that I had to cut down on fats to help my liver and gallbladder so I had cut meats. Later I spoke to my brother who worked a long time in the chicken industry, he told me that he had experienced similar prickling sensation when he had only eaten chicken for sometime and found that he needed to increase his Iron intake because he had almost no iron in his diet. I looked at my diet and found could be a possibility. So I reintroduced some meat. I don't really know what stopped it but a few weeks later it wasn't as bad and then it just faded away. I basically had stopped all three of those items I mentioned, chinese herbs, acupunture, and again had a bit of meat.
I was still doing herbs but different ones. My diet had changed but I had more iron in it. An acupuncture? well I had had enough of being a pin cushion.
I also know that itchy skin all over is very likely a Liver problem. It is one of the symptoms of liver having big problems. But in my case it wasn't so much as itchy but very prickly.