ผิวหนังตายแห้ง

Also known as costra, corteza, caracha

Eschar (; ; ; or an eschar) is a slough or piece of dead tissue that is cast off from the surface of the skin, particularly after a burn injury, but also seen in gangrene, ulcer, fungal infections, necrotizing spider bite wounds, tick bites associated with spotted fevers and exposure to cutaneous anthrax. The term ‘eschar’ is not interchangeable with ‘scab’. An eschar contains necrotic tissue whereas a scab is composed of dried blood and exudate. thumbnail|Eschar on the back of the knee on a patient with lymphangitis caused by [[Rickettsia sibirica]] Black eschars are most frequently attribute