question: Hi, about a week ago (after a workout) i have begun to have quite bad sensitivity issues to the right (as I see it) of my stomach and my back. It feels like a constant feeling of sunburn however there are no marks, redness, signs of any trauma etc. I have had no loss of appetite and everything else seems to be working fine - i am planning to visit the GP but any advice on this would be really useful. Thanks on advance.