1st degree-epidermis only-hot,red, painful-heals without complication-sunburn. Heals within a few days
2nd degree-Upper dermis. Blistering from separation of epith. and dermis. Heals within a few weeks
1st and 2nd are also partial-thickness
3rd degree-full thickness-throough dermis, not painful initially, grey-white, cherry red or black. Loss of water very dangerous, infection. Grafting can help regenerate skin. Can lead to loss of function due to lack of elasticity in scar tissue.