Scorch burns are third-degree burns of thermal burns, according to the highest degree of burns. The injury reaches the whole skin layer, and can even reach deep into the subcutaneous, muscle and bone. Skin necrosis, dehydration can form a scorched scab, touch like leather, or even has been charred. What are the causes of burns? “Burns can be caused by hot water, steam, flame, electric current, laser, radiation, acid, alkali, phosphorus and other factors. What is commonly referred to or narrowly defined as a burn is a thermal burn caused solely by heat and is common in clinical practice. Burns caused by other factors are referred to as etiologic, such as electrical burns and chemical burns. For example, drinking very hot liquids or corrosive substances (e.g., acids) can burn the esophagus and stomach, and inhaling smoke or hot air in a building fire can cause burns to the lungs.