Dry heat sources like fire, hot objects, the sun, chemicals and electricity as well as wet heat sources like hot liquids and steam can cause burns and scalds. First degree burns damage only the outer layer of skin and appear as redness and inflammation while second degree burns blister and damage deeper layers of skin. Third degree burns severely damage or destroy skin and can damage deeper tissues, posing a serious risk of infection. For burns and scalds, it is important to run the affected area under cold water for 10 minutes or more, remove jewelry, avoid removing clothing stuck to the burn, apply a sterile dressing, and seek prompt medical attention for anything more than a minor burn or scald.