Burn Percentage in Adults: Rule of Nines Topic Guide
Burn Percentage in Adults: Rule of Nines: In adults, the "rule of nines" is used to determine the body surface area that has been burned. Burn percentage is calculated using multiples of 9. The “rule of nines” helps determine treatment decisions.
Burns Heat, chemical, or electrical injury to the skin, eyes, nerves, blood vessels, and internal organs can cause burns. First-degree burn symptoms include red skin and local pain (sunburn). Second-degree burns can cause blisters and swelling. Third-degree burns are a medical emergency, and cause white or black charred skin.