Sunburn

What is sunburn?

Sunburn is the redness, soreness, itching, and sometimes blistering that occurs after your skin has too much exposure to the ultraviolet (UV) rays of the sun or a sunlamp.

How does it occur?

You may become sunburned when:

You stay out in the sun too long without enough protection from sunscreen or clothing.
You are in the sun when sunlight is most intense, usually between the hours of 10 AM to 4 PM.
You take medicines that make your skin more sensitive to the sun.
You live or travel in an area where sunlight is more intense, such as in the tropics or at high altitude, or you are exposed to reflection of sunlight from water or snow.

It doesn't have to be hot or even sunny for you to become sunburned.

What are the symptoms?

One of the problems with sunburn is that you may not have any symptoms until a few hours after you have been burned. The symptoms are:

redness
a feeling of heat
mild to severe pain to the touch
blisters in severe cases.

Within a couple of days, your skin may itch. In about a week the skin may peel.

How is it treated?

It may help to:

Soak in a cool bath. It may help to add bath products containing oatmeal to help decrease itching and the burned feeling.
Put cool, moist cloths on the sunburned skin several times a day.
Take an anti-inflammatory medicine, such as aspirin, ibuprofen, or naproxen. It will help the sunburn be less painful. It may also lessen the damage to your skin, especially if you start taking it when you first suspect you are sunburned. Carefully follow the directions on the package for taking the medicine.
Put aloe vera lotion or another moisturizing lotion on your skin 3 times a day for 2 days.
Put calamine lotion on your skin to lessen the itching.
Take antihistamine tablets, such as Benadryl. Taking the tablets may cause you to become drowsy. Do not drive or operate machinery or equipment while you are taking this medicine.

If you have just a few shallow blisters, treat them like a minor household burn. You can apply some antibiotic ointment, such as bacitracin, and then cover the blistered area with a bandage.

Don't try to open the blisters. Let them open on their own, when the underlying skin can better protect itself from infection. If you are not sure about how severe your blisters are or if they are becoming infected, check with your health care provider. Signs of infection are increased redness or pain, and yellow discharge from the blisters.

How long will the effects last?

The symptoms of sunburn usually worsen 24 to 48 hours after you are burned. The symptoms gradually go away over the next few days.

Sunburn causes long-term damage to the skin. Redness alone is the same as a first-degree burn. Redness with blistering is a second-degree burn. Both types of sunburn are harmful to the skin and over time increase the risk of skin cancer. Blistering burns increase the risk of malignant skin cancer (melanoma) by several times. This is especially true if you have severe sunburns 3 or more times when you are a teen or young adult.

Too much sun exposure, even without sunburn, also causes the skin to age faster. Wrinkles, sagging, and brown sunspots develop at an earlier age.

What can I do to prevent sunburn?

There are many ways and many products to prevent sunburn. To prevent sunburn:

Don't stay out in the sun for a long time, especially if you are fair-skinned and burn easily. Remember that you can become sunburned even on cloudy days.
Stay out of the sun during the times of most intense rays: 10 AM to 4 PM during daylight savings time.
Use sunscreen with an SPF (sun protection factor) of 15 or greater. (The lighter your skin, the higher SPF you need. Health care providers recommend an SPF of 30 if you are very fair skinned.) Use a broad-spectrum sunscreen that protects against both UVA and UVB rays. It's best to put the sunscreen on your skin 30 to 60 minutes before you go out into the sun. If you are playing in water or sweating a lot, put more sunscreen on every hour or two.
Wear protective clothing: hat, sleeved shirt, and long pants.
Be especially careful if you are at high altitude or vacationing in the tropics, or if the sun's rays are being reflected by water, sand, snow, or concrete.
Do not use sunlamps or tanning booths. They are promoted as using mostly ultraviolet A (UVA), but both UVA and ultraviolet B (UVB) cause skin damage. UVA actually penetrates more deeply into the skin than UVB. Both UVA and UVB cause sunburn, aging of the skin, and skin cancer.

Sunlight also damages the eyes. Wear sunglasses that provide 100% UV ray protection.

Disclaimer: This content is reviewed periodically and is subject to change as new health information becomes available. The information provided is intended to be informative and educational and is not a replacement for professional medical evaluation, advice, diagnosis or treatment by a healthcare professional.

HIA File SKN4871F.HTM Release 9.0/2006