Melanoma 101

Melanoma is considered the most serious type of skin cancer. Though it doesn’t affect as many people as other skin cancers, melanoma causes the most deaths, reports the Mayo Clinic.

• How it occurs. Melanoma occurs in cells called melanocytes. These cells create melanin, which is responsible for skin pigment and helps protect against UV rays. When skin is exposed to UV light, melanocytes produce more melanin, tanning the skin.

Sometimes, these cells mutate, growing and dividing quicker than normal cells, according to the American Academy of Family Physicians. These cells clump together, forming tumors. If tumors are malignant, they can attack the healthy tissue. They also can spread and form new tumors throughout the body, which is common with melanoma — if it isn’t treated early enough.

• Who’s at risk. The following people are at increased risk for melanoma and need to be extra diligent about sun safety:
  • People with fair skin, because they have lower amounts of melanin and need greater protection
  • People living in southwestern states where sun exposure is strong
  • People with weakened immune systems
  • People who have a family history of melanoma
  • People who’ve suffered severe sunburn in childhood or recent years

Moles: Unusual vs. normal moles

You should see a dermatologist once a year to have your moles checked. In addition, keeping tabs on your moles is key to catching melanoma in its early stages.

Here’s a look at the differences between irregular moles (or dysplastic nevi, which can lead to melanoma) and regular moles.

• Dysplastic nevi can appear as a combination of tan, brown, red/pink moles and are often larger than 5 millimeters across, about ¼ inch.
• Ordinary moles are round or oval and have a concise edge that separates them from the rest of the skin. Dysplastic nevi have irregular edges and blend into the skin.
• Regular moles start as smooth spots on the skin and may become raised, creating a tiny bump. Dysplastic nevi tend to have a scaly, rough or rocky surface but also can be smooth.
• The typical number of moles is usually between 10 and 40 on a person’s body. Dysplastic nevi are found in large numbers (100 or more), although someone might have just a few.
• In men, harmful moles are often found between the shoulders and hips and neck and head areas. In women, they typically appear on the lower legs, shoulders and hips.

The ABCDEs of monitoring your moles

Here’s a quick way to check old moles that become irregular and new moles that develop, according to the American Academy of Family Physicians. If you answer yes to any of the questions below, see a doctor immediately.

• A (Asymmetry): If you were to split the mole in two, are the sides unequal?
• B (Border): Are the edges of the mole jagged or blurry?
• C (Color): Has the mole changed color (i.e., has the color spread or darkened? Is there a loss of color? Does the mole have multiple colors?)
• D (Diameter): Is the mole larger than ¼ in diameter?
• E (Elevation): Is the mole raised above the skin and rough?

Sun safety

Use these tips to keep your skin safe from melanoma and other skin cancers and sun damage.

• Don’t tan outdoors or use tanning beds. Remember that any sun exposure is damaging to skin, so there’s no safe way to tan (including that “base tan”).
• Wear sunscreen every day and apply it correctly. Though everyone knows that sunscreen is necessary, the majority of people don’t apply enough of it or as often as they should — creating a false sense of security, where you don’t get the full SPF but think you’re protected. Here’s how to ensure you’re fully protecting your skin.

  • Make sure to apply sunscreen 20 to 30 minutes before going outdoors.
  • Apply sunscreen with SPF 15 or greater. Look for ingredients such as titanium oxide, zinc oxide or avobenzone (Parsol 1789), which provide protection against UVA and UVB rays. Some affordable options include: Neutrogena Ultra Sheer Dry Touch Sunblock SPF 55, Purpose Dual Treatment Lotion SPF 15 and Neutrogena Sensitive Skin Sunblock Lotion SPF 30.
  • Use at least one ounce (a shot glass or two tablespoons) of sunscreen every time you apply.
  • Reapply every two hours even if a sunscreen is labeled “water-resistant.”These sunscreens can lose their effectiveness after 40 minutes in the water.

• Avoid sun exposure during peak hours: between 10 a.m. and 4 p.m.
• Wear sunglasses and a wide-brimmed hat.
• Seek the shade. However, being in the shade should never substitute for sunscreen, because the sand and concrete reflect UV rays. The sun also reflects off of water and snow, so be especially careful around these areas.

See also:

3 Things You Should Know about Sun Damage

Sunburn Smarts

Sun Protection from Head to Toe

6 Hair-Saving Tips for Damaged Locks

Microdermabrasion: The Basics