Skip to content

    Melanoma/Skin Cancer Health Center

    Font Size

    Tanning: Cancer Cause on 'Covered' Skin?

    Biggest Jump in Common Skin Cancer on Areas Not Exposed to Everyday Sun
    WebMD Health News

    July 22, 2003 -- Each year, some 250,000 Americans are diagnosed with squamous cell carcinoma, the nation's second most common form of skin cancer that typically occurs on the face, ears, and other parts of the body routinely exposed to damaging ultraviolet rays.

    But in tracking this type of skin cancer in their own country, Swedish researchers find the biggest jump in cases in recent decades has occurred in a more unlikely location -- skin normally covered by clothing.

    Skyrocketing Skin Cancer Cases

    They report that since the 1960s, the rate of squamous cell carcinomas -- found more commonly fair-skinned people -- jumped nearly 260% in men and more than 780% in women on regularly sun-exposed skin areas.

    Meanwhile, cases on the torso and other skin normally covered by clothing have skyrocketed even more -- a nearly 700% jump in men and 1,575% in women.

    "The higher increase in covered, rather than exposed, [body] sites suggests that intentional tanning is the cause," lead researcher Kari Hemminki, MD, PhD, tells WebMD. "UV irradiation reaches covered sites only when exposed intentionally."

    Everyday exposure to ultraviolet light (from the sun or tanning parlors) is the single biggest risk for the development of squamous cell carcinoma; other risk factors include arsenic ingestion, exposure to certain chemicals or radiation, organ transplantation, or chronic skin ulcers.

    Squamous cell cancer looks like a crusted or scaly skin lesion that grows or becomes an ulcer without healing. A biopsy is usually needed to confirm the diagnosis. Although it usually occurs in sun-exposed areas it can occur anywhere on the body. If left untreated this type of skin cancer can destroy tissue around the tumor and spread throughout the body. Each year, squamous cell cancer causes about 2,500 deaths in the U.S.

    Intentional Tanning May -- or May Not Be -- to Blame

    But Hemminki says even short bursts of exposure, like that of intentional tanning while on vacation, is the likely explanation for the huge increase in skin cancers on normally covered skin.

    "Swedes are active holiday makers to sunny resorts," Hemminki tells WebMD. "Summer time is short and people tend to expose themselves excessively."

    Today on WebMD

    Malignant melanoma
    How to spot it early.
    Woman checking out tan lines
    There’s a dark side to that strive for beauty.
    sauteed cherry tomatoes
    Fight cancer one plate at a time.
    Lung cancer xray
    See it in pictures, plus read the facts.
    12 Ways to Protect Your Skin from Melanoma
    precancerous lesions slideshow
    Do You Know Your Melanoma ABCs
    15 Cancer Symptoms Men Ignore
    screening tests for men
    Vitamin D
    Is That Mole Skin Cancer
    Brilliant sun rays