Burn depth is a measure of severity. Describe the characteristics of superficial partial thickness, deep partial-thickness, and full thickness burns.
Superficial partial-thickness: 1st degree = pink to red skin (i.e., sunburn), slight edema, and pain relieved by cooling. Deep partial-thickness: 2nd degree = destruction of epidermis and upper layers of dermis; white or red, very edematous, sensitive to touch and cold air, hair does not pull out easily. Full thickness: 3rd degree = total destruction of dermis and epidermis; reddened areas do not blanch with pressure, not painful, inelastic, waxy white skin to brown, leathery eschar