my sister has that. Zinc deficiency is a cause of this 'chicken skin' and dont exfoliate till ur red raw it'll only damage your skin-exfoliation only takes away light layers of skin not bumps.Removing dairy from your diet may also help. try zinc supplements first for a couple of months, if that doesnt do the trick try eliminating dairy products and use soya alternatives insead, see if that works. Use creams that are for sensitive skin, and dont use cheap products-this also helps. Try taking vit e supplements also. If everything fails including trip to your GP then laser treatment may help