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Sun Damage

Source: www.mckinley.uiuc.edu
Topic: Sun Damage
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Sort Desciption: If you are a sun worshiper, you probably share several characteristics with other sun worshipers. You like to look healthy. You like the outdoors. You have sun-damaged skin. ...

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If you are a sun worshiper, you probably share several characteristics with other sun worshipers. You like to look healthy. You like the outdoors. You have sun-damaged skin. You may also share an increased risk of skin cancer, the most common type of cancer. In order to avoid these risks, you do not have to give up the sun. But you do need to avoid overexposing your skin to the sun.

Over time, sun exposure causes skin to lose resilience, and develop blotches and "freckles" (solar lentigines), wrinkles, spider vessels, blackheads, coarse texture and yellow discoloration. Sun exposure also increases your risk of several types of skin cancer. For some people, the outer layer (or lens) of the eye also thickens in response to sun exposure and forms a cataract.

Sunlight consists of two types of harmful UV rays â UVA and UVB. The UVB rays are (which are blocked by window glass) are the primary cause of sunburn and skin cancer. UVA rays (which pass through window glass) penetrate deeper into the dermis, or base layer of the skin.

SUNSCREEN

The Sun Protection Factor (SPF) on a sunscreen measures its ability to block UVB rays, and help prevent sunburn. But a sunscreen's SPF does not measure the amount of protection it provides from UVA rays, which can cause immunosuppression â or the weakening of the body's ability to protect itself from cancer and other diseases. It is possible that even though a person is getting adequate UVB protection to prevent sunburn the UVA rays can still cause unseen damage that could cause immunosuppression and skin cancer. This may explain why some skin cancers, including melanoma, appear anywhere on the body â even places that are not directly exposed to the sun. Although "broad-spectrum" sunscreens offer some protection against UVA rays, it is seldom adequate to protect from immunosuppression. To supplement sunscreen, people should follow a sun protection program.

SUN DAMAGE AND SKIN CANCER

Too much sun at any one time can lead to sunburn, (a radiation burn). The redness, pain and swelling from sunburn are comparable to any other type of burn. In most cases, your discomfort (or pain) will be temporary. However, the long-term effects of multiple sunburns are cumulative. Even one, extensive sunburn after the age of 20 doubles a person's risk of melanoma.

Another problem some sunbathers develop is sun poisoning, an allergic reaction to the UV light called polymorphous light eruption. Redness, bumps or blisters, itching, and burning on exposed skin develops two to five hours after exposure. Other symptoms may include; chills, headache, nausea, and aches. If this happens, the best thing you can do is avoid the sun. If you are using any type of skin product, taking medication or exposing yourself to the sun for long periods, altering your habits should lead to an improvement in your condition and allow you to continue to enjoy some sun exposure.

SUN TIPS YOU CAN COUNT ON

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