Skin cancer doesn’t have one single look. It can appear as a pearly bump, a scaly patch, a dark streak under a nail, or even a pink spot that barely stands out from surrounding skin. The specific appearance depends on which type of skin cancer it is and what your skin tone is. Knowing the visual patterns for each type helps you catch something early, when treatment is simplest.
Basal Cell Carcinoma
Basal cell carcinoma is the most common skin cancer, and it often looks deceptively minor. On lighter skin, it typically appears as a shiny, translucent bump with a pearly white or pink quality. You can sometimes see tiny blood vessels running through or around it. On brown and Black skin, the same cancer often looks like a brown or glossy black bump with a rolled, raised border.
Not all basal cell carcinomas look like bumps, though. Some show up as a flat, scaly patch with or without a raised edge. Others resemble a white, waxy, scar-like area without a clearly defined border. A brown, black, or blue lesion with dark spots and a slightly raised, translucent border is another pattern. One reliable clue: the spot bleeds easily, scabs over, then reopens. A sore that keeps cycling through bleeding and healing without resolving is worth getting checked.
Squamous Cell Carcinoma
Squamous cell carcinoma tends to look rougher and more textured than basal cell. It commonly appears as a flat sore with a scaly crust, or as a raised, wart-like bump. On the lip, it may start as a rough, scaly patch that eventually becomes an open sore. It can also develop inside the mouth as a sore or rough patch.
The hallmark of squamous cell carcinoma is persistence. A sore or scab that hasn’t healed in about two months, or a flat patch of scaly skin that simply won’t go away no matter what you do, fits this pattern. These lesions often appear on sun-exposed areas like the face, ears, hands, and forearms, but they can develop anywhere, including the genitals.
Melanoma and the ABCDE Rule
Melanoma is less common than basal or squamous cell carcinoma but far more dangerous. The National Cancer Institute uses a five-letter framework to describe its early warning signs:
- Asymmetry: One half of the mole or spot doesn’t match the other half.
- Border: The edges are ragged, notched, or blurred. Pigment may spread into surrounding skin.
- Color: Multiple shades are present in the same spot. You might see brown, black, and tan mixed with areas of white, gray, red, pink, or blue.
- Diameter: Most melanomas are larger than 6 millimeters across (about the size of a pencil eraser), though they can be smaller.
- Evolving: The spot changes in size, shape, or color over weeks or months.
A normal mole is typically uniform in color, round or oval, and stays the same over time. If you have a spot that breaks any of these ABCDE rules, especially one that’s actively changing, that’s the single most important signal to act on.
Melanoma That Doesn’t Look Like Melanoma
Not all melanomas are dark. Amelanotic melanoma appears as a pink or red spot on the skin, with little or no brown or black pigment. Because it blends in and resembles harmless irritation or a pimple that won’t heal, it’s often overlooked. According to Memorial Sloan Kettering Cancer Center, amelanotic melanoma is frequently diagnosed at a later stage compared with darker melanomas precisely because people don’t recognize it as cancer.
If you have a pink or reddish bump that persists for weeks, doesn’t respond to typical wound healing, and slowly grows, treat it with the same suspicion you’d give a dark, irregular mole.
What Skin Cancer Looks Like on Dark Skin
Skin cancer on darker skin tones often appears in locations people don’t think to check. The most common melanoma in people with dark skin is acral lentiginous melanoma, which develops on the palms, soles of the feet, fingers, toes, and under the nails. It can look like a dark patch on your palm or the bottom of your foot, or a dark band running lengthwise under a fingernail or toenail.
Basal cell carcinoma also looks different on darker skin. Rather than the classic pearly pink bump, it often presents as a brown or glossy black bump with a rolled border. These differences matter because many common descriptions of skin cancer are based on how it appears on lighter skin, which can lead to delayed recognition in people with brown or Black skin.
Cancer Under the Nail
Subungual melanoma develops under a fingernail or toenail and typically appears as a dark vertical streak running from the base of the nail to the tip. Some people describe it as looking like someone drew a line on the nail with a brown or black marker. Over time, the streak may widen, become uneven in color, or extend beyond the nail into the surrounding skin. That spread of pigment onto the cuticle or skin around the nail is called Hutchinson sign, and it’s a particularly important warning marker.
As it progresses, the nail may crack, split, lift away from the nail bed, or develop a nodule. Not every dark line under a nail is cancer. Vertical pigmented bands are common and usually harmless, especially in people with darker skin. The concerning features are a band that changes over time, has irregular or uneven color, or is accompanied by nail damage.
Actinic Keratosis: The Precancer to Watch
Actinic keratoses aren’t cancer yet, but they can progress to squamous cell carcinoma if left alone. They appear as flat to slightly raised, scaly, crusty patches that range in color from red, tan, or pink to brown, silvery, or skin-colored. They can be as small as a pinpoint or up to an inch across.
Here’s what makes actinic keratoses distinctive: you can often feel them before you can see them. The skin feels dry, rough, and sandpaper-like to the touch. Some patches feel raw or sensitive, or produce a prickling or burning sensation. If you run your fingers over sun-exposed areas like your forehead, scalp, ears, or the backs of your hands and feel persistent rough spots, those are worth showing to a dermatologist.
Merkel Cell Carcinoma
Merkel cell carcinoma is rare but aggressive. It typically appears as a small, firm, painless bump or nodule on the skin, often red or skin-colored. It may have a scaly surface or broken skin over the top. The defining characteristic is speed: it grows fast. A firm bump that appears suddenly and noticeably increases in size over weeks is the pattern to recognize. It most often shows up on sun-exposed areas like the face, head, and neck.
How to Tell a Harmless Growth From a Concern
Many people searching for what skin cancer looks like are really trying to figure out whether a spot on their body is dangerous. One of the most common lookalikes is seborrheic keratosis, a benign growth that becomes increasingly common with age. These growths are typically flat or slightly raised, waxy in texture, and painless. They often look like they’ve been stuck onto the skin’s surface rather than growing from within it.
The practical distinction comes down to a few features. Benign growths tend to be symmetrical, uniform in color, and stable over time. They don’t bleed spontaneously, and their borders are well-defined. Cancerous lesions tend to break those rules: irregular shape, mixed colors, blurred or ragged edges, and change over time. A spot that bleeds without injury, a sore that won’t heal, or any growth that’s visibly different from what it looked like a few months ago deserves professional evaluation.