Emergency burns: bigger than your palm; on the face, eyes, hands, feet, joints, or genitals; white, leathery, or painless (full-thickness); chemical or electrical; circling a limb or the chest; or any burn with breathing trouble or smoke signs.
Depth tells: red and painful is first-degree, blistered and very painful is second, white or charred and strangely numb is third, and third is always an emergency. Location and cause override size: small burns to the face, hands, feet, joints, or genitals still get professional care, and chemical burns (rinse 20-plus minutes), electrical burns (hidden internal damage), and smoke-inhalation signs (singed nose hairs, sooty mouth, hoarseness, breathing trouble) all mean the ER. Babies, the elderly, and people with diabetes or poor circulation get lower thresholds. For the genuinely minor burn: cool running water 10 to 20 minutes, never ice, butter, or toothpaste, a loose clean cover, un-popped blisters, and acetaminophen or ibuprofen. Days later, spreading redness, worsening pain, pus, or fever means infection and a visit.
What to do
Common questions
When is a burn an emergency?
The emergency call depends on depth, size, location, and cause. Depth: first-degree burns are red and painful (sunburn territory) and treat at home; second-degree blisters and hurts badly, small ones are home-manageable, larger ones are not; third-degree burns look white, brown, or charred, feel leathery, and can be strangely painless because the nerves are destroyed, and those are always emergencies. Size: any second-degree burn bigger than about 3 inches (roughly your palm) or any third-degree burn of any size goes to the ER, per standard burn-center referral guidance reflected in MedlinePlus. Location overrides size: burns to the face, eyes, hands, feet, major joints, genitals, or any burn circling a limb or the chest get professional care even when small, because scarring there costs function or, around the chest, can restrict breathing. Cause overrides everything: chemical burns (rinse with running water for at least 20 minutes while arranging care), electrical burns (the visible wound hides internal damage, and any electrical burn gets evaluated), and any burn with smoke inhalation signs (singed nose hairs, soot in the mouth, hoarse voice, breathing trouble) are all emergencies. Special people get lower bars: babies, toddlers, and the elderly, plus anyone with diabetes or poor circulation. Home care for the genuinely minor kind: cool running water 10 to 20 minutes (never ice, never butter or toothpaste), loosely cover with clean plastic wrap or a clean dressing, no popping blisters, and acetaminophen or ibuprofen for pain. Watch for infection over the following days: spreading redness, increasing pain, pus, or fever means get seen. And any burn from abuse-pattern injuries, or a burn plus uncertainty about how it happened in a child, deserves medical eyes.