From last 27 days suddenly my skin start very itchy all over chest neck and back, it feels like tingling all over these parts whenever I feel even slightly warm, like after do cycling or just walking. And if I apply moisturiser it stops. But again my skin become rough after 2 or 3 hours. I take fish oil but I am taking it from 1 year. But this problem has started just in the beginning of winter this year. Even after applying oil it is not stopping. There is no rash or any spots on my body. But today I notice some 2 or 3 red small spots just after itching. And when I sit in cold this itching stops and even after when I persist itching and sweat come out due to exercise I feel some burning sensation but itching stops.