I agree with others that you do need further testing to exclude any thing else, but given the time of onset the other explanations are more likely - i do not know why you were not told, as i was, years ago, that the introduction of insulin causes all sorts of new problems which may take as long as you have had undiagnosed high blood glucoses to resolve - this can be years, and, for some things, it was for me. I had severely swollen and heavy legs, i could hardly lift them at all, after i was out of intensive care, and I could hardly see - fortunately these resolved over time, the leg swelling in about 3 months, - then, much later, only when the HbA1c had been normal for a while, severe pain kicked in, not all the time, but it was debilitating, and at the same time there were times of long term sharp pinpricks over the whole body, but worst legs and feet, also feelings as if water was trickling down my legs, all sorts of strange feelings,interspersed with numb areas, as this improved i started getting really sharp almost electric shock sensations in my legs, it could make me jump, - i did not know it at the time, but this is probably good, if you get this, do not panic, as it seemed to show that my nerves were sorting out. Much later, as the hand sensations had started later and lasted longer, i was referred for testing in a lab, but things, at least by that time, were ok. Many many years later i am fine - i hope yours sorts out also - good control, at least for me - was the clue to improvement. If you are not on the pump, get one if you can, i could not, at that time, and that made recovery all the more difficult. Best wishes, Ann