The skin may be scaly, dry and rough. Sometimes it looks like a sunburn. Skin involvement in dermatomyositis isn’t limited to rashes. A condition called calcinosis, in which calcium is deposited just under the skin in hard, painful nodules, also can occur, and seems to . Nov 08, · “Sunburn is caused by UV rays directly affecting skin cells, damaging them, and leading to discoloration, premature aging, as well as increasing risks of skin cancer.” The thing is, .