Thermal injuries are damage to the skin and underlying tissues caused by extreme heat, cold, or fire. These injuries can result from sources like hot liquids, flames, or frozen surfaces. The severity of a thermal injury is classified into degrees, with first-degree burns affecting only the outer layer of skin, while third-degree burns can damage deeper tissues and may require medical treatment. Treatment for thermal injuries varies based on their severity. First-degree burns can often be treated at home with cool compresses and over-the-counter pain relief. More severe injuries, such as those involving blisters or extensive skin damage, may need professional care, including wound dressings or even surgery.