Do not apply salve or medication to the burn. When to Call a Health Professional For all third-degree burns. If a second-degree burn involves the face, hands, feet, genitals, or a joint and is more than 1 inch in diameter. If the burn encircles an arm or leg, or covers more than one-quarter of the body part involved. If it is an electrical burn.
Electrical burns are often more extensive than they appear.
If the pain lasts longer than 48 hours. Heat or red streaks extending from the area. Discharge of pus. Fever of 100 o or higher with no other cause. If an infant, older adult, or person with disabilities is burned.