A second degree burn, also called a partial-thickness burn, looks red, wet, and blistered. The skin is typically swollen, painful, and may appear shiny or weep fluid. Unlike a mild first degree burn that only reddens, a second degree burn damages the top layer of skin and the layer beneath it, which is why blisters form almost immediately.
What Does A Second Degree Burn Look Like?
The most reliable visual sign is a blister. The burn site will be red or pink, moist, and may have a blotchy appearance. If the blister has broken, the underlying skin looks raw, wet, and bright red or pink.
Swelling is common around the burned area. The skin may feel warm to the touch because blood flow increases as the body responds to the injury. The pain is usually intense, and the area is highly sensitive to air and light touch.
How Can You Tell It Apart From A First Degree Burn?
A first degree burn, like a mild sunburn, is dry, red, and painful but has no blisters. The skin does not break open, and it usually heals within a few days without scarring.
A second degree burn always involves blistering or skin that looks wet. The damage goes deeper, so healing takes longer — typically one to three weeks. If the burn is deep enough, it may leave permanent changes in skin color or texture.
What Causes A Second Degree Burn?
Hot liquids, steam, flames, hot surfaces, and prolonged sun exposure are the most common causes. Contact with hot oil or boiling water often produces this depth of burn because liquids transfer heat quickly into the skin.
Chemical burns and electrical burns can also cause second degree damage. These types sometimes look different from thermal burns. A chemical burn may not blister right away, and an electrical burn may have a small entry point with deeper damage underneath.
When Should You See A Doctor?
See a doctor if the burn is larger than three inches in diameter. Burns on the face, hands, feet, groin, or major joints need medical evaluation regardless of size because these areas are harder to treat and more prone to complications.
Seek emergency care if the burn looks white, charred, or leathery. These signs suggest a third degree burn, which destroys all layers of skin and requires specialized treatment. Also get medical help if you have signs of infection: increased pain, spreading redness, pus, or fever.
How Should You Treat A Second Degree Burn At Home?
For small second degree burns, the first step is cooling. Run cool — not cold — water over the burn for 10 to 15 minutes. This stops the heat from continuing to damage deeper tissue. Do not use ice. Ice can cause further tissue injury.
Clean the burn gently with mild soap and water. Do not pop blisters. An intact blister is a natural sterile dressing that protects the wound from bacteria. If a blister breaks on its own, wash the area, apply a thin layer of antibiotic ointment, and cover it with a sterile non-stick bandage.
Over-the-counter pain relievers like acetaminophen or ibuprofen can help manage pain. Keep the burn covered and change the dressing daily. Watch for signs of infection and seek medical care if any appear.
What Not To Do
Do not apply butter, oils, or toothpaste to a burn. These home remedies trap heat and introduce bacteria into the wound. They do not help healing and can make the injury worse.
Do not use cotton balls directly on the burn. Cotton fibers can stick to the wound and contaminate it. Use sterile gauze or a clean non-stick dressing instead.
Do not use ice or very cold water. Extremely cold temperatures constrict blood vessels and can damage already injured tissue. Cool running water is the correct approach.
How Long Does It Take To Heal?
Most second degree burns heal within two to three weeks. Superficial second degree burns that only reach the upper part of the second skin layer may heal in about two weeks with minimal scarring. Deeper burns take longer and are more likely to leave visible scars.
During healing, the area may itch. This is normal as new skin forms. Keep the area moisturized with a gentle, fragrance-free lotion once the wound has closed. Protect the healing skin from sun exposure for at least a year, because new skin is highly sensitive to UV damage.
When Is A Second Degree Burn Actually A Third Degree Burn?
Sometimes burns that look like second degree burns at first are actually deeper. A deep partial-thickness burn can look similar to a superficial one initially, but it may appear paler, have less pain, or feel firm rather than soft.
A key difference is pain level. Second degree burns are very painful because nerve endings are exposed. Third degree burns may be less painful because the nerves themselves are destroyed. If the person reports little pain in an area that looks severely burned, this is a red flag for a deeper injury.
This is why medical evaluation matters. An experienced clinician can assess burn depth more accurately than visual inspection alone, and they can determine whether the burn needs specialized wound care or skin grafting.
Are There Long-Term Effects?
Most second degree burns heal without significant long-term problems. Some people develop changes in skin pigmentation — the healed area may be lighter or darker than surrounding skin. This is common and often fades over time.
Scarring is possible with deeper burns. Hypertrophic scars, which are raised and thickened, can develop in some people. Physical therapy may be needed if a burn crosses a joint, because scar tissue can restrict movement.
Frequently Asked Questions
Should I pop a blister from a second degree burn?
No. Leave the blister intact because it protects the wound from infection. If it breaks on its own, clean it gently and cover it with a sterile dressing.
Can I put ice on a second degree burn?
No. Ice can damage the tissue further and slow healing. Use cool running water for 10 to 15 minutes instead.
How big does a second degree burn need to be before seeing a doctor?
See a doctor if the burn is larger than three inches in diameter, or if it is on the face, hands, feet, groin, or a major joint. Any burn that looks white or charred needs emergency care.
Is a second degree burn always painful?
Yes, most second degree burns are very painful because nerve endings in the damaged skin layers are exposed. If a burn looks severe but is not painful, it may be a deeper third degree burn and requires emergency care.
