Burns are injuries to the skin and/or underlying tissues caused by heat, chemicals, electricity, or radiation. The severity of a burn is classified by the depth and size of the injury. First-degree burns only affect the top layer of skin and are usually treated with cool water and pain medication, while second-degree burns affect deeper layers of skin and may require medical attention such as wound care and antibiotics to prevent infection. Third-degree burns are the most severe and can damage muscles, bones, and other tissues, often requiring immediate medical attention, including wound care, surgery, and skin grafting. It is important to take steps to prevent burns, such as using protective equipment, practicing fire safety, and avoiding exposure to hazardous chemicals or materials.

Burns are caused by:

• Fire
• Hot liquid or steam
• Hot metal, glass or other objects
• Electrical currents
• Radiation, such as that from X-rays
• Sunlight or other sources of ultraviolet radiation, such as a tanning bed
• Chemicals such as strong acids, lye, paint thinner or gasoline
• Abuse

To reduce the risk of common household burns:

• Never leave items cooking on the stove unattended.
• Turn pot handles toward the rear of the stove.
• Don't carry or hold a child while cooking at the stove.
• Keep hot liquids out of the reach of children and pets.
• Keep electrical appliances away from water.
• Check the temperature of food before serving it to a child. Don't heat a baby's bottle in the microwave.
• Never cook while wearing loosefitting clothes that could catch fire over the stove.
• If a small child is present, block his or her access to heat sources such as stoves, outdoor grills, fireplaces and space heaters.
• Before placing a child in a car seat, check for hot straps or buckles.
• Unplug irons and similar devices when not in use. Store them out of reach of small children.
• Cover unused electrical outlets with safety caps. Keep electrical cords and wires out of the way so that children can't chew on them.
• If you smoke, never smoke in bed.
• Be sure you have working smoke detectors on each floor of your home. Check them and change their batteries at least once a year.
• Keep a fire extinguisher on every floor of your house.
• When using chemicals, always wear protective eyewear and clothing.
• Keep chemicals, lighters and matches out of the reach of children. Use safety latches. And don't use lighters that look like toys.
• Set your water heater's thermostat to below 120 F (48.9 C) to prevent scalding. Test bath water before placing a child in it.

Also be alert to burn risks outside the home, especially if you are in places with open flames, chemicals or superheated materials.

Most minor burns can be treated at home. They usually heal within a couple of weeks.

For serious burns, after appropriate first aid and wound assessment, your treatment may involve medications, wound dressings, therapy and surgery. The goals of treatment are to control pain, remove dead tissue, prevent infection, reduce scarring risk and regain function.

People with severe burns may require treatment at specialized burn centers. They may need skin grafts to cover large wounds. And they may need emotional support and months of follow-up care, such as physical therapy.

Medical treatment

After you have received first aid for a major burn, your medical care may include medications and products that are intended to encourage healing.

• Water-based treatments. Your care team may use techniques such as ultrasound mist therapy to clean and stimulate the wound tissue.
• Fluids to prevent dehydration. You may need intravenous (IV) fluids to prevent dehydration and organ failure.
• Pain and anxiety medications. Healing burns can be incredibly painful. You may need morphine and anti-anxiety medications — particularly for dressing changes.
• Burn creams and ointments. If you are not being transferred to a burn center, your care team may select from a variety of topical products for wound healing, such as bacitracin and silver sulfadiazine (Silvadene). These help prevent infection and prepare the wound to close.
• Dressings. Your care team may also use various specialty wound dressings to prepare the wound to heal. If you are being transferred to a burn center, your wound will likely be covered in dry gauze only.
• Drugs that fight infection. If you develop an infection, you may need IV antibiotics.
• Tetanus shot. Your doctor might recommend a tetanus shot after a burn injury.

Physical and occupational therapy

If the burned area is large, especially if it covers any joints, you may need physical therapy exercises. These can help stretch the skin so that the joints can remain flexible. Other types of exercises can improve muscle strength and coordination. And occupational therapy may help if you have difficulty doing your normal daily activities.

Surgical and other procedures

You may need one or more of the following procedures:

• Breathing assistance. If you've been burned on the face or neck, your throat may swell shut. If that appears likely, your doctor may insert a tube down your windpipe (trachea) to keep oxygen supplied to your lungs.
• Feeding tube. People with extensive burns or who are undernourished may need nutritional support. Your doctor may thread a feeding tube through your nose to your stomach.
• Easing blood flow around the wound. If a burn scab (eschar) goes completely around a limb, it can tighten and cut off the blood circulation. An eschar that goes completely around the chest can make it difficult to breathe. Your doctor may cut the eschar to relieve this pressure.
• Skin grafts. A skin graft is a surgical procedure in which sections of your own healthy skin are used to replace the scar tissue caused by deep burns. Donor skin from deceased donors or pigs can be used as a temporary solution.
• Plastic surgery. Plastic surgery (reconstruction) can improve the appearance of burn scars and increase the flexibility of joints affected by scarring.