Burns may be caused by fire, hot metal or other substances, as well as the sun or in contact with electricity and certain chemicals. Cause severe burns or contact with hot liquids, such as boiling water or fat from the pan. We distinguish between several degrees of burns, from mild reddening of the skin to a loss of skin and tissue layers beneath it. Deep, extensive burns are the most important reasons for giving first aid.
Generally, when sunburned skin was observed, the most important thing is the immediate cooling of the injured body parts, for example by holding it under cold, clean running water from the tap. Any fragments of burnt clothing embedded in skin should be untouched until the arrival of professional help. Electrocution causes muscle tension, and even cardiac arrest.
Rescuer must first verify that the current source has been disconnected or interrupted electrical contact between the device and the victims. Otherwise, touching the victim, the rescuer himself is in danger of contamination.