For many people, skin cancer is easy to overlook. A spot may look like an ordinary mole, a patch of dry skin, or a sore that simply needs more time to heal. But knowing what changes to watch for can help people recognize when a skin concern deserves a closer look.
That awareness is particularly important in Colorado, where spending time outdoors is part of everyday life for many residents. Hiking, skiing, cycling, running and other outdoor activities can mean regular exposure to ultraviolet radiation throughout the year. At a skin cancer clinic in Colorado, dermatologists regularly see patients who noticed something unusual but waited to have it examined. Sometimes the spot turns out to be harmless. Other times, an examination reveals skin cancer that needs treatment.
Skin cancer can take several forms, and not every cancerous growth looks like the classic dark, irregular mole people associate with melanoma. Basal cell carcinoma can appear as a shiny or pearly bump, while squamous cell carcinoma may resemble a rough, scaly or crusted patch. Melanoma can develop in an existing mole or appear as a new spot altogether.
Several changes are worth bringing to a dermatologist’s attention, here are five changes that are worth taking seriously.
1. A Mole or Spot Is Changing
One of the most important things to watch for is a spot or bump that is changing.
A mole that has been on your skin for years may not seem concerning at first. But if it begins changing in size, shape, color or elevation, it deserves attention. Dermatologists often use the ABCDE method when evaluating possible melanoma. The final letter, E, stands for evolving, meaning the spot is changing over time.
That change does not necessarily mean cancer. Moles can change for harmless reasons, and many unusual-looking spots are ultimately benign. The point is that a noticeable change gives a dermatologist something worth investigating.
For patients, this is one reason becoming familiar with your own skin can be useful. If you know what your moles normally look like, it is easier to notice when one begins to stand out.
The change may be subtle. A mole might become slightly darker, develop an uneven edge or slowly increase in size. It may also begin itching, crusting or bleeding. These symptoms should not be ignored simply because the original spot has been there for a long time.
A useful rule is simple. If a spot looks different than it used to, make note of the change and have it evaluated rather than trying to determine on your own whether it is harmless.
2. You Notice a New or Unusual Spot
Not every skin cancer begins as a mole you have had since childhood.
A new spot can be just as important to notice, particularly when it looks different from the other marks on your skin. Dermatologists sometimes refer to this as the “ugly duckling” sign. The idea is straightforward. Most people have moles that share similar characteristics, so a spot that looks noticeably different from the rest deserves a closer look.
The spot may be darker than your other moles, have several colors, have an unusual shape or simply look out of place.
This can be difficult to recognize on parts of the body that are easy to overlook. The scalp, back, behind the ears, between the toes and beneath the nails are not areas most people routinely inspect. Yet skin cancer can develop in places that receive little or no direct sun exposure.
For Colorado residents, that matters. Hiking, skiing, running, cycling and other outdoor activities can mean spending significant time in the sun throughout the year. Snow can also reflect ultraviolet radiation, making sun protection important during winter as well as summer.
A new spot does not automatically signal skin cancer. But if it persists, grows or looks distinctly different from everything around it, it is worth showing to a dermatologist.
3. The Spot Has Irregular Edges or Multiple Colors
When people picture melanoma, they often think of a dark mole. But color alone is not the only consideration. The shape and border of a spot can provide important clues as well.
The ABCDE guidelines use the letters A, B and C to describe three characteristics that can raise concern. A stands for asymmetry, meaning one half of the spot does not resemble the other. B stands for border, particularly when the edges are irregular, scalloped or poorly defined. C stands for color, especially when a single spot contains several different shades.
A mole can contain shades of brown or black, for example, while other areas may appear tan, red, white or blue.
It is important not to treat the ABCDE guidelines as a diagnostic test. Some healthy moles have irregular features, and some melanomas may not display every warning sign. The guidelines are better understood as a way to notice something that deserves professional attention.
Size is another factor people often hear about. Melanomas are frequently larger than about 6 millimeters when diagnosed, roughly the size of a pencil eraser. However, melanoma can be smaller than that, so a tiny spot should not automatically be dismissed.
In practice, a dermatologist looks at the whole picture rather than relying on one measurement.
4. A Sore Will Not Heal
A spot does not have to resemble a mole to be concerning.
A sore, scab or rough patch that repeatedly heals and then returns can be another warning sign. The same is true of a spot that simply refuses to heal over time. This is one of the signs people should watch for when checking their skin.
This can be particularly easy to overlook because people commonly attribute persistent skin changes to everyday problems. A sore might be blamed on shaving, dry weather, an irritated hair follicle or a minor injury.
Basal cell carcinoma and squamous cell carcinoma can both look different from the stereotypical image of skin cancer. Basal cell carcinoma may appear as a shiny or pearly bump, while squamous cell carcinoma can resemble a rough, red or scaly area. Some lesions can ulcerate or bleed.
In Colorado, patients diagnosed with certain types of skin cancer may have several treatment options available, including Mohs surgery in Colorado. The procedure removes cancerous tissue layer by layer, allowing the surgeon to examine each layer as it is removed while preserving as much healthy surrounding skin as possible.
Colorado’s dry climate can make it tempting to assume that rough or irritated skin is simply a result of dryness. Sometimes it is. But if an area continues to return, crust, bleed or fail to heal, it is better to have it examined than to keep treating it as ordinary irritation.
A dermatologist can determine whether the area is something benign, precancerous or cancerous and recommend the appropriate next step.
5. A Spot Starts Itching, Bleeding or Becoming Painful
Changes in how a spot feels can be just as important as changes in how it looks.
Itching, bleeding, tenderness or pain can occur for a number of reasons, many of which have nothing to do with cancer. A raised mole can become irritated by clothing, jewelry or shaving, for example. Still, a spot that begins producing new symptoms should not be ignored, particularly when those symptoms occur alongside a visible change.
Melanoma can sometimes itch, hurt or bleed. Other skin cancers may also bleed or become irritated as they grow.
The important distinction is between a spot that was briefly irritated and one that repeatedly develops symptoms without an obvious explanation.
This is where paying attention to patterns becomes useful. If a mole catches on clothing once, that does not necessarily warrant concern. If it repeatedly bleeds without being injured, looks different than it did previously or begins itching for no apparent reason, an appointment with a dermatologist is a sensible next step.
When Should You See a Dermatologist?
There is no need to become an expert in diagnosing skin cancer at home. In fact, trying to determine whether a suspicious spot is cancerous can create unnecessary anxiety and may also lead someone to dismiss a problem that deserves attention.
Instead, pay attention to what is new, changing or unusual.
Regular self-examinations can help people become familiar with their skin and notice changes earlier. Dermatologists recommend checking the entire body, including areas that are easy to miss.
Professional skin cancer screenings can also provide another layer of detection, particularly for people with risk factors or a history of skin cancer.
The key is not to wait for a spot to become obviously serious.
Skin cancer is often highly treatable when it is found early. A new mole, an evolving spot, an unusual border, a sore that will not heal or unexplained itching and bleeding are all reasons to take a closer look.
For people living in Colorado, that awareness can be especially valuable. Outdoor life is one of the state’s biggest attractions, but regular sun exposure also makes skin protection and awareness important parts of long-term skin health.
Most unusual spots will not turn out to be cancer. But there is little downside to having a questionable spot examined. When it comes to skin cancer, noticing something early can make a meaningful difference.
