GentleCure Blog

How to Detect Skin Cancer

mole on back

Do you know how to identify skin cancer? Most of us are aware of the importance of protecting our skin from the sun’s harmful rays, but even the most diligent individuals could be at risk of developing a cancerous spot on their skin. The most important thing is to detect skin cancer early, but some problematic skin spots can go unnoticed for some time, especially if they’re not in a particularly visible area.

Early detection is one of the most effective ways to improve outcomes. When skin cancer is identified in its earliest stages, treatment is often simpler and more successful. Understanding what to look for and checking your skin regularly can make a meaningful difference.

Basal cell skin cancer and squamous cell skin cancer are the two most common types of skin cancer, but their warning signs are quite different. In this guide, we’ll discuss how to detect skin cancer for both types, as well as how to perform a skin self-exam at home. 

If you are unsure whether a spot is concerning, it is always better to have it evaluated. A quick check by a specialist can provide clarity and peace of mind.

Signs of Basal Cell Skin Cancer

Basal cell skin cancer is the most commonly diagnosed type of skin cancer and is highly treatable, with a low risk of spreading. Still, if you suspect that one or more of the following signs of basal cell skin cancer apply to you, you’ll want to see a dermatologist without delay:

  • Flat, firm areas of the skin that are pale or yellow in color and may look similar to a scar
  • Raised patches that are itchy and reddish in color
  • Small bumps that have a shiny, translucent, or pearly appearance and a pink or reddish color (they may also have blue, black, or brown areas)
  • Skin growths that are pink in color with a lowered center and raised edges
  • Open sores that never heal, or heal and come back

These spots often develop slowly over time and may not cause pain, which is why they are sometimes overlooked. Pay close attention to any spot that looks different from others on your skin or that changes gradually.

Signs of Squamous Cell Skin Cancer

Behind basal cell skin cancer, squamous cell skin cancer is the second most commonly diagnosed type of skin cancer. Unlike basal cell skin cancer, it does pose the risk of spreading to local lymph nodes if left untreated for too long. Here are the signs of squamous cell skin cancer to look for:

  • Rough or scaly patches that may crust or bleed
  • Raised skin growths or lumps that may have a lowered center
  • Open sores that never heal, or heal and come back
  • Skin growths that resemble warts

Squamous cell skin cancer may grow more quickly than basal cell skin cancer, making it especially important to monitor new or evolving spots closely. Any persistent or rapidly changing lesion should be evaluated promptly.

The ABCDE Rule for Detecting Skin Cancer

In addition to recognizing specific signs, many specialists recommend using the ABCDE rule as a simple way to evaluate moles and skin spots:

  • A – Asymmetry: One half of the spot does not match the other
  • B – Border: Edges are irregular, blurred, or poorly defined
  • C – Color: Uneven color with multiple shades (brown, black, red, or white)
  • D – Diameter: Larger than 6mm (about the size of a pencil eraser), though smaller spots can still be concerning
  • E – Evolving: Any change in size, shape, color, or behavior over time

The “E” for evolving is especially important. A spot that changes is often one of the earliest warning signs of skin cancer.

How to Perform a Skin Self-Examination

Basal cell skin cancer and squamous cell skin cancer tend to appear on areas of the skin that are more clearly visible, such as the face, hands, head, and neck. However, it is possible for them to develop in obscure areas, too. As such, it’s important to perform a thorough self-examination of your skin when checking for signs of skin cancer. Here are some tips to follow so you don’t miss any areas:

  1. Examine your skin in a full-body mirror. Check the front of your body and the back of your body in the mirror, then raise your arms up and check the sides of your body from top to bottom.
  2. Check your underarms, forearms, and palms. Bend your elbows and check your underarms, forearms, and palms carefully. Skin cancer may also appear on your nails.
  3. Check your legs, between your toes, and the soles of your feet. Thoroughly check the front and back of your legs, the soles of your feet, and between each of your toes. 
  4. Check your scalp and neck with a hand mirror. Stand in front of a large mirror while holding a hand mirror, using the hand mirror to examine the back of your neck and your entire scalp, parting your hair as you go. 
  5. Get a closer look at your back with a hand mirror. Hold your hand mirror behind your back and turn your head around to look at the mirror, checking for any spots on your back.

It can be helpful to perform a self-check once a month and keep track of any spots using photos. This makes it easier to notice subtle changes over time.

Searching for an easier way to track new and existing moles? Check out our recommendations for skin cancer apps that are designed to help. 

When Should You See a Doctor?

You should consider seeing a specialist if you notice:

  • A spot that does not heal within a few weeks
  • A lesion that bleeds, crusts, or changes over time
  • A new growth that looks different from other spots on your skin
  • Any spot that causes concern, even if it seems minor

Understanding your treatment options early can help you take the next step with confidence if further evaluation or treatment is needed.

Learn More With GentleCure®

Do you have additional questions about how to identify skin cancer? Interested in learning more about non-invasive treatment options? The GentleCure blog answers these questions and more, so be sure to check it out frequently for skin cancer information you can trust. Of course, you’re welcome to call us at 855-936-4411 to speak with a Skin Cancer Information Specialist.

For those exploring treatment options after detection, you can learn more about non-surgical approaches like IGSRT and how they are used to treat certain types of skin cancer.

Frequently Asked Questions About Detecting Skin Cancer

How can you detect skin cancer early?

Skin cancer can often be detected early by watching for new or changing spots on your skin. Using the ABCDE rule and performing regular self-exams can help identify warning signs sooner.

What does skin cancer usually look like?

Skin cancer may appear as a new growth, a sore that does not heal, a changing mole, or a scaly or crusted patch. The appearance varies depending on the type.

How often should you check your skin?

It is recommended to perform a skin self-exam about once a month. Regular checks make it easier to notice changes over time.

When should you worry about a skin spot?

You should be concerned if a spot changes in size, shape, or color, bleeds, does not heal, or looks different from other spots on your skin.

Can skin cancer appear in areas not exposed to the sun?

Yes, skin cancer can develop in areas that are not regularly exposed to sunlight, which is why a full-body skin check is important.

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For more information on skin cancer treatment options, speak with a Skin Cancer Information Specialist today.

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