Thank you so much for your question. I m sorry to hear that you had to receive many times of surgery. To discuss about your current problem, I want you to describe your ethnic and the residence you live. And how long have you been suffering these symptoms? I also want to know whether there are some changes on your skin, such as rash, redness, vesicles, ulceration etc. Have you done medical check-up for your blood sugar level to exclude diabetes mellitus? Any food or medication you are sensitive for? Any similar features in your family members? Itchiness may be due to a variety of diseases such as skin diseases, allergic reactions, worm infestation, autoimmune causes, liver and renal diseases(which you have mentioned to be normal) and so on. I d be very greatful if you express a further more complete information. Wishing you the best of luck. Thank you so much.