Skin & hair

Yes, Darker Skin Gets Skin Cancer — and Often Later

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The belief that dark skin cannot get skin cancer is a myth that costs lives — not because the disease is common in skin of color, but because it is missed. Here is where skin cancer tends to appear on darker skin, why it is diagnosed later, what to look for on the palms, soles, and nails, and when a spot is worth a visit.

Last updated: July 2026

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Yes — every skin tone can develop skin cancer

Skin cancer, melanoma included, occurs in people of every skin tone. The extra melanin in darker skin filters more ultraviolet light and lowers the risk, which is why melanoma is far less common in Black Americans than in White Americans — the incidence is a small fraction as high 1. But a lower rate is not a zero rate, and the outcomes tell a harder story: when melanoma does occur in skin of color, it is more often found late.

Melanin lowers the risk of skin cancer but does not remove it — in darker skin the disease is less common, not absent, and it is more often caught at a dangerous stage. That combination, low expectation and late detection, is the reason this question matters.

Where skin cancer tends to appear on darker skin

On darker skin, melanoma disproportionately shows up on the parts of the body that get the least sun. The most common pattern in this setting is acral lentiginous melanoma, which arises on the palms, the soles of the feet, and under the fingernails and toenails 2. It can also appear on mucous membranes. This runs opposite to the common assumption that skin cancer only strikes sun-exposed skin, and it is central to understanding skin cancer in skin of color.

Because acral melanoma on the soles, palms, and nails sits on skin people rarely inspect, an unusual spot there can grow for a long time before anyone notices. A dark patch on the bottom of a foot, a new streak in a nail, or a spot between the toes deserves the same attention as a changing mole on the face.

Why it is so often caught later

Two forces push melanoma in darker skin toward a later diagnosis. The first is the myth itself: someone who believes dark skin cannot get skin cancer is not watching for it, and neither, sometimes, is a clinician who sees it rarely. The second is location — a lesion on the sole or under a nail is easy to mistake for a bruise, a wart, a callus, or a fungal nail, and easy to leave unexamined for months.

The consequence is measured in stage. Melanoma survival is strongly stage-dependent: five-year relative survival is around 99% when the cancer is still localized to the skin, and it falls sharply once it has spread 1. Finding a melanoma later means finding it thicker, and thicker melanoma is harder to cure. That gap in stage, more than any difference in the cancer itself, is much of why outcomes differ — and closing it is mostly a matter of attention and access, not of a fundamentally worse disease.

What to look for, and where

The same warning signs apply across every skin tone. The ABCDE features — asymmetry, an irregular border, more than one color, a diameter larger than a pencil eraser, and especially evolving, meaning any change over time — flag a mole that needs a professional look 3. On darker skin, the addition is a matter of habit: include the palms, the soles, the spaces between the toes, and the nails in the routine.

A few patterns are worth naming: a dark line down a nail that is widening, pigment spreading from a nail onto the surrounding skin, a spot on the sole that is growing or changing, or a sore that does not heal. None of these confirms cancer, and no article can grade a lesion it cannot see. The reliable move is to photograph the spot with something for scale, note the date, and have a clinician examine anything new, changing, or unexplained. A mark on the sole that keeps getting brushed off as a plantar wart or a callus, but that keeps changing, is a classic example of something that earns a proper look rather than more waiting.

Does sun protection still matter?

Yes — with an honest caveat. Ultraviolet exposure is a modifiable risk factor for skin cancer, and reducing it lowers risk across skin tones 4. In long-term trial follow-up, adults who used sunscreen regularly developed fewer melanomas than those who used it only when they felt like it 5. Sunburn, uneven pigmentation, and photoaging all happen in darker skin, so sun protection is not wasted effort.

The caveat is important: the melanomas most characteristic of skin of color — those on the soles, palms, and nails — are not primarily driven by sun, so sunscreen alone does not cover them. That is why checking the non-sun-exposed sites matters as much as sun protection does. Both belong in the routine, and neither replaces the other. This is also where the picture differs from fair skin cancer risk, where sun exposure carries far more of the weight.

Screening, self-checks, and getting seen

For adults with no symptoms, the US Preventive Services Task Force found the current evidence insufficient to recommend for or against routine whole-body skin exams by a clinician 6. That is a statement about screening the general population — it does not apply to a specific spot that is new, changing, or in an unusual place, which is always a reason to be seen.

Regular self-checks, including the palms, soles, and nails, are the practical backbone, and a partner or family member can help with hard-to-see areas like the back of the legs. People sometimes ask who should get regular skin checks with a clinician; a personal or family history of melanoma, many atypical moles, or a previous skin cancer are common reasons. Where cost is a barrier, free skin cancer screening events and community skin cancer screening programs run in many areas, and a primary-care clinician can refer onward when a spot is concerning.

Common questions

Yes. Melanoma is far less common in people with darker skin than in fair skin, but it does occur. When it does, it often appears on the palms, the soles of the feet, or under the nails, and it is frequently found at a later stage. That later detection, not a more aggressive cancer, is a large part of why outcomes tend to be worse.

Melanoma in darker skin often shows up on sun-protected areas: the palms, the soles of the feet, between the toes, under the fingernails and toenails, and sometimes on mucous membranes. These are places most people never inspect closely, which is why an unusual spot there can go unnoticed. Checking these sites should be part of any skin self-exam in skin of color.

The main driver is the stage at which it is found. Melanoma is highly treatable when caught while it is still confined to the skin, and much harder to cure once it has spread. Because it is less expected in darker skin and often appears on overlooked areas like the soles and nails, it tends to be diagnosed later and thicker, which lowers survival.

Sun protection still lowers skin-cancer risk and prevents sunburn, uneven pigment, and photoaging in darker skin, so it has real value. The caveat is that the melanomas most common in skin of color arise on the soles, palms, and nails, which are not sun-driven. So sunscreen helps, but checking the non-sun-exposed sites matters just as much.

Use the ABCDE features for moles — asymmetry, irregular border, more than one color, larger diameter, and any change over time — and extend the check to the palms, soles, between the toes, and the nails. A dark streak in a nail, a growing spot on the sole, or a sore that will not heal is worth photographing and having examined. Appearance alone cannot rule anything out.

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When a spot on darker skin needs a look

  • —A new, growing, or darkening spot on the palm, the sole of the foot, or between the toes
  • —A dark band under a fingernail or toenail that is widening, or pigment spreading from the nail onto the skin
  • —A sore, ulcer, or spot that does not heal over several weeks
  • —A mole that is changing in size, shape, or color, or one that itches, bleeds, or crusts

This article is educational and cannot diagnose a spot on your skin. Skin cancer occurs in every skin tone, and no photo, description, or checklist replaces an in-person exam. If a spot is new, changing, or in an unusual place, arrange an evaluation with a clinician or dermatologist.

References

  1. 1.National Cancer Institute, Surveillance, Epidemiology, and End Results (SEER) Program (2025). Cancer Stat Facts: Melanoma of the Skin. NIH / National Cancer Institute (SEER). linkUS melanoma incidence is much lower in Black Americans than in White Americans, and five-year relative survival is strongly stage-dependent — about 99% when localized and much lower once the cancer has spread.
  2. 2.National Cancer Institute (PDQ Adult Treatment Editorial Board) (2025). Melanoma Treatment (PDQ®)–Health Professional Version. NIH / National Cancer Institute. link ✓Acral lentiginous melanoma is a melanoma subtype that arises on the palms, the soles, and under the nails.
  3. 3.Tsao H, Olazagasti JM, Cordoro KM, et al. (2015). Early detection of melanoma: reviewing the ABCDEs. Journal of the American Academy of Dermatology. PMID 25698455 ✓The ABCDE criteria — asymmetry, border irregularity, color variegation, diameter greater than 6 mm, and evolving — are clinical features used to identify moles that warrant evaluation for melanoma.
  4. 4.National Cancer Institute (PDQ Screening and Prevention Editorial Board) (2025). Skin Cancer Prevention (PDQ®)–Health Professional Version. NIH / National Cancer Institute. link ✓Ultraviolet radiation from the sun, sunlamps, and tanning beds is a modifiable risk factor for skin cancer, and reducing UV exposure is a prevention strategy.
  5. 5.Green AC, Williams GM, Logan V, Strutton GM (2011). Reduced Melanoma After Regular Sunscreen Use: Randomized Trial Follow-Up. Journal of Clinical Oncology. PMID 21135266 ✓In long-term follow-up of a randomized trial, adults who used sunscreen regularly developed fewer melanomas than those who used it discretionarily.
  6. 6.US Preventive Services Task Force (2023). Skin Cancer: Screening. US Preventive Services Task Force. link ✓The USPSTF found current evidence insufficient to assess the balance of benefits and harms of routine whole-body visual skin screening in asymptomatic adults; this addresses screening, not evaluation of a concerning lesion.

6 sources, numbered by first appearance. General health information, not medical advice. AI-assisted editorial content — citations link their sources. Editorial policy

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