Overview

Being out in the sun can be good for you. Sunlight can brighten your mood and help you feel healthier. But getting too much of the ultraviolet (UV) rays from sunlight or from indoor tanning can harm your skin. It can cause problems right away as well as problems that may develop years later.

A sunburn is skin damage from the sun's ultraviolet A and ultraviolet B (UVA and UVB) rays. Most sunburns cause mild pain and redness but affect only the outer layer of skin (first-degree burn). The red skin might hurt when you touch it. These sunburns are mild. They can usually be treated at home.

Skin that is red and painful and that swells up and blisters may mean that deep skin layers and nerve endings have been damaged (second-degree burn). This type of sunburn is usually more painful and takes longer to heal.

Other problems that can occur along with sunburn include:

• Heatstroke or other heat-related illnesses from too much sun exposure.
• Allergic reactions to sun exposure, sunscreen products, or medicines, such as antibiotics, some acne medicines, and some diabetes medicines.
• Vision problems, such as burning pain, decreased vision, or partial or complete vision loss.

Long-term problems include:

• An increased chance of having skin cancer.
• Having more cold sores.
• More risk of problems related to a health condition, such as lupus.
• Cataracts from not protecting your eyes from direct or indirect sunlight over many years. Cataracts are one of the leading causes of blindness.
• Skin changes, such as premature wrinkling or brown spots.

Your skin type affects how easily you get sunburned. People with white or freckled skin, blond or red hair, and blue eyes usually sunburn easily.

People with darker skin don't sunburn as easily. But they can still get skin cancer. So it's important to use sun protection, no matter what your skin colour is.

Your age also affects how your skin reacts to the sun. Children's skin is more sensitive to sunlight.

You may get a more severe sunburn depending on:

• The time of day. You are more likely to get a sunburn between 11 in the morning and 3 in the afternoon, when the sun's rays are the strongest. You might think the chance of getting a sunburn on cloudy days is less, but the sun's damaging UV light can pass through clouds.
• Whether you are near reflective surfaces, such as water, white sand, concrete, snow, or ice. All of these reflect the sun's rays and can increase your risk of getting a sunburn.
• The season of the year. The position of the sun on summer days can cause a more severe sunburn.
• Altitude. It's easy to get sunburned at higher altitudes. That's because there's less of the earth's atmosphere to block the sunlight. UV exposure increases in elevation.
• How close you are to the equator (latitude). The closer you are to the equator, the more direct sunlight passes through the atmosphere.
• The UV index of the day, which shows the risk of getting a sunburn that day.

Preventive measures and home treatment are usually all that's needed to prevent or treat a sunburn.

• Protect your skin from the sun.
• Don't stay in the sun too long.
• Use sunscreen, and wear clothing that covers your skin.

If you have any health risks such as having diabetes or cancer, or if you take medicines that may increase the seriousness of sun exposure, you should avoid being in the sun from 11 in the morning to 3 in the afternoon.

Self-Care

Here are some things you can do at home for a mild sunburn.

• Use cool cloths on sunburned areas.
• Take frequent cool showers or baths.
• Apply lotions.

  Lotions that contain aloe vera may feel soothing to sunburned areas. Topical steroids (such as 1% hydrocortisone cream) may also help with sunburn pain and swelling. You may need to check with your doctor first if you need to use the cream for a child younger than age 2 or for use in the genital area.

  There's not much you can do to stop skin from peeling after a sunburn. It's part of the healing process. Lotion may help relieve the itching.

• Rest and drink fluids for a headache.

  A sunburn can cause a mild fever and a headache. Lie down in a cool, quiet room to relieve the headache. A headache may be caused by dehydration, so drinking fluids may help.

• Try other remedies.

  There isn't clear proof that other common remedies are safe and effective, but they may help. For example, you can try an oatmeal bath product (such as Aveeno) or apply calamine lotion for itching.

• Watch for blisters and signs of a skin infection.

  A small, unbroken blister will usually heal on its own. Use a loose bandage to protect it.

  If a blister opens, gently wash the area with clean water. You may cover the blister with a thin layer of petroleum jelly, such as Vaseline, and a non-stick bandage.

  Watch for a skin infection while your blister is healing. Signs of infection include:

  • Increased pain, swelling, redness, or warmth around the blister.
  • Red streaks leading from the blister.
  • Pus draining from the blister.
  • A fever.

When to call for help during self-care

Call a doctor if any of the following occur during self-care at home:

• New or worse vision problems.
• New or worse dehydration and being unable to drink fluids.
• New or worse signs of infection, such as swelling, pus, or a fever.
• Symptoms occur more often or are more severe.

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