Skin Cancer Prevention and Early Detection

Skin cancer is the most commonly diagnosed cancer in the United States. It is also one of the most preventable, and one of the most treatable when it is caught early. Whether you're a sun lover, an outdoor worker, or someone who simply wants to protect your family's health, understanding skin cancer prevention and early detection could save your life.

At Guardian Primary Care in Cape Girardeau, MO, we believe that education and proactive care are your best defenses against skin cancer. Let's explore evidence-based strategies that can help you protect your skin and catch problems early when they're most treatable.

Skin cancer occurs when skin cells are damaged, often by ultraviolet (UV) radiation from the sun or tanning beds, causing them to grow uncontrollably. There are three main types:

• Basal cell carcinoma: the most common type, rarely spreads, often appears as a pearly bump or pink patch
• Squamous cell carcinoma: the second most common, can spread if untreated, may look like a scaly red patch or open sore
• Melanoma: the most dangerous type, can spread rapidly, often develops from an existing mole or appears as a new dark spot

Basal and squamous cell skin cancers are by far the most common, and melanoma, while less common, causes the majority of skin cancer deaths. The good news is that melanoma found early, while it is still thin and has not spread, is highly treatable.

While anyone can develop skin cancer, certain factors increase your risk:

• Fair skin: lighter skin has less melanin, which provides some natural protection from UV radiation
• History of sunburns: even one severe sunburn in childhood or adolescence raises your risk of melanoma later in life
• Many moles: having a large number of moles, particularly irregular ones, increases melanoma risk
• Family history: melanoma can run in families
• Excessive sun or tanning bed exposure: cumulative UV damage over time
• Weakened immune system: due to medical conditions or medications

It's important to note that people of all skin tones can develop skin cancer. In fact, when skin cancer is diagnosed in people with darker skin, it's often at a more advanced stage because it was detected later. Everyone needs to practice sun safety and perform regular skin checks.

Preventing skin cancer is largely within your control. Here are evidence-based strategies that can significantly reduce your risk:

Use Sunscreen Properly

• Choose broad-spectrum sunscreen with SPF 30 or higher
• Apply 15 minutes before going outdoors and reapply every two hours
• Use enough: most adults need about one ounce (a shot glass full) to cover exposed skin
• Don't forget often-missed spots: ears, back of neck, tops of feet, and scalp (if hair is thinning)

Seek Shade and Dress Smart

• Avoid peak sun hours (10 a.m. to 4 p.m.) when UV rays are strongest
• Wear protective clothing: long sleeves, pants, and wide-brimmed hats (at least 3 inches)
• Choose UV-blocking sunglasses that wrap around to protect the delicate skin around your eyes
• Consider UPF (Ultraviolet Protection Factor) clothing for extended outdoor activities

Avoid Tanning Beds

The World Health Organization classifies UV-emitting tanning devices as carcinogenic to humans, and indoor tanning that begins in the teens or twenties raises melanoma risk substantially. There is no such thing as a "safe" tan from a tanning bed.

Early detection dramatically improves outcomes. The American Academy of Dermatology recommends using the ABCDE rule to identify potential melanomas:

• A
  AsymmetryOne half of the mole doesn't match the other half
• B
  BorderEdges are irregular, ragged, notched, or blurred
• C
  ColorColor is not uniform; may include shades of brown, black, pink, red, white, or blue
• D
  DiameterLarger than 6mm (about the size of a pencil eraser), though melanomas can be smaller
• E
  EvolvingThe mole is changing in size, shape, color, or elevation, or developing new symptoms like bleeding or itching

Remember, not all melanomas follow these rules. Any new, changing, or unusual spot on your skin should be evaluated by a healthcare provider.

Monthly self-exams can help you detect changes early. Here's how to perform a thorough skin check:

• Examine your body in a full-length mirror, front and back, then check both sides with arms raised
• Bend elbows and look carefully at forearms, upper arms, and palms
• Check the backs of your legs, feet, spaces between toes, and soles
• Use a hand mirror to examine the back of your neck and scalp (part hair to check thoroughly)
• Check your back and buttocks with a hand mirror
• Take photos of moles to track changes over time

If you notice anything suspicious, don't wait for your annual physical. Contact your healthcare provider promptly.

Schedule an appointment with your healthcare provider if you notice:

• A new growth or spot on your skin
• A mole that has changed in size, shape, or color
• A sore that doesn't heal within a few weeks
• A spot that itches, bleeds, or becomes painful
• A mole that looks significantly different from your other moles (the "ugly duckling" sign)

Annual skin checks are especially important if you are at higher risk. Your provider can perform a full body skin examination and refer you to a dermatology specialist if anything needs a closer look.