The Bottom Line

Skin cancer in people with dark skin is less common overall but is diagnosed at later stages — leading to significantly lower survival rates. The key difference: melanoma in darker-skinned patients most often appears in areas that don't get much sun — the palms of the hands, soles of the feet, under and around nails, and mucous membranes. Knowing where to look and what to look for can save your life through early detection.

How Is Skin Cancer Detection Different in Dark Skin?

Skin cancer detection in darker skin (Fitzpatrick types IV-VI) requires a fundamentally different approach than in lighter skin. While skin cancer screening for lighter-skinned patients focuses heavily on sun-damaged areas (face, arms, back), skin cancer in people of color often occurs in non-sun-exposed locations that are frequently overlooked during routine exams.

The statistics are stark: the 5-year melanoma survival rate is 71% for Black patients compared to 94% for white patients. This dramatic difference is not because melanoma is more aggressive in dark skin — it's because it's detected later. By the time melanoma is diagnosed in Black patients, it's more likely to have already spread to lymph nodes or distant sites.

The most common melanoma subtype in people of color is acral lentiginous melanoma (ALM) — a type that develops on the palms, soles, and nail beds. Bob Marley's death from melanoma under his toenail is perhaps the most well-known example of this often-overlooked presentation.

Where to Look: Key Areas for Self-Examination

Areas to check regularly (monthly self-exam):

  • Soles of the feet: The most common site for melanoma in Black patients. Look for new dark spots, asymmetric patches, or areas of uneven pigmentation.
  • Palms of the hands: Second most common acral site. Check for new pigmented lesions.
  • Under and around fingernails and toenails: Look for a dark stripe (melanonychia) that is new, widening, involves a single nail, or is accompanied by pigment spreading onto the surrounding skin (Hutchinson's sign — a warning sign for nail melanoma).
  • Between the toes: An often-missed area.
  • Inside the mouth: Mucosal melanoma can develop on the gums, palate, lips, and tongue. Look for new dark patches.
  • Genital and perianal areas: Mucosal melanoma can occur here — mention any new pigmented lesions to your doctor.
  • Traditional sun-exposed areas: While less common in dark skin, squamous cell carcinoma and basal cell carcinoma can still develop on the face, ears, and scalp in areas of chronic sun exposure, scarring, or chronic inflammation.

What to Watch For: Warning Signs

The ABCDEs of melanoma (adapted for dark skin):

  • A — Asymmetry: One half of the spot doesn't match the other
  • B — Border: Irregular, ragged, or blurred edges
  • C — Color: Multiple colors or shades within the spot (brown, black, tan, gray, white, red)
  • D — Diameter: Larger than 6mm (pencil eraser), though melanoma can be smaller
  • E — Evolving: Any change in size, shape, color, or new symptoms (itching, bleeding). This is the MOST important criterion.

Specific signs on dark skin:

  • A dark stripe in a nail that is new, widening, or on a single digit
  • Pigment spreading from a nail stripe onto the surrounding nail fold (Hutchinson's sign)
  • A new dark spot on the sole, palm, or between toes that is asymmetric or multicolored
  • A sore that doesn't heal, especially in scars, areas of chronic inflammation, or sites of previous burns
  • A shiny, pearly, or translucent bump that may appear darker (pigmented basal cell carcinoma — can look black or brown on dark skin, not the classic translucent appearance)

Types of Skin Cancer in Darker Skin

Acral lentiginous melanoma (most important): The most common melanoma type in Black, Asian, and Hispanic patients. Develops on palms, soles, and subungual areas (under nails). Not related to UV exposure — occurs in sun-protected sites. Often diagnosed late because these areas aren't routinely checked.

Squamous cell carcinoma (SCC): The most common skin cancer in Black patients overall. In dark skin, SCC often develops in areas of chronic scarring, previous burns, chronic wounds, or radiation sites — not necessarily sun-damaged areas. It can also develop in areas of chronic inflammation like discoid lupus or long-standing ulcers.

Basal cell carcinoma (BCC): Less common in dark skin than in light skin but does occur. On dark skin, BCC may appear as a pigmented (dark brown or black) papule rather than the classic pearly/translucent bump, making it harder to recognize.

When to See a Dermatologist

See a board-certified dermatologist immediately if you notice a new dark spot on your palms, soles, or under a nail, if a nail develops a new dark stripe (especially single nail involvement), if any mole or pigmented spot changes in size, shape, or color, if a sore or wound doesn't heal after 4-6 weeks, or if you develop a dark or unusual bump on your skin that is new and growing. Request a full-body skin exam that specifically includes checking your palms, soles, nail beds, and between your toes — areas sometimes skipped during routine skin checks. If your provider doesn't examine these areas, ask them to.

Frequently Asked Questions

I have dark skin — do I really need to worry about skin cancer?

Yes. While overall skin cancer rates are lower in people with darker skin, melanoma and squamous cell carcinoma do occur — and they are diagnosed at later, more dangerous stages due to lower awareness and delayed detection. The survival rate gap (71% vs. 94% for melanoma) is almost entirely due to late detection, not biology. Awareness and regular self-examination are your best protection.

Should I wear sunscreen if I have dark skin?

Yes — sunscreen protects against UV-related skin damage, premature aging, melasma, and PIH, even if your melanoma risk is lower than in lighter skin. That said, the most common melanoma in dark skin (acral lentiginous) occurs in non-sun-exposed areas, so sunscreen alone is not sufficient protection. Self-examination of palms, soles, and nails is equally important.

How often should I do a skin self-exam?

Monthly self-examination is recommended. Focus on your palms, soles, between your toes, nail beds, and any moles or pigmented spots anywhere on your body. Use a mirror or have a partner check hard-to-see areas. Take photos of any spots you want to monitor — this makes it easier to detect changes over time. Additionally, see a dermatologist annually for a professional full-body skin exam.

What does a normal dark nail stripe look like vs. melanoma?

Many people with darker skin have melanonychia (dark stripes in nails) that are completely benign — especially when multiple nails are affected, the stripes are uniform in color and width, and they've been present for years without change. Warning signs for nail melanoma include a stripe on a single nail (especially the thumb or big toe), a stripe that is widening or darkening over time, a stripe wider than 3mm, pigment spreading from the nail onto the surrounding skin (Hutchinson's sign), and nail plate distortion or destruction. When in doubt, see a dermatologist — a nail biopsy can provide a definitive answer.

References

  1. Gloster HM, Neal K. Skin cancer in skin of color. J Am Acad Dermatol. 2006;55(5):741-760.
  2. Hu S, et al. Comparison of stage at diagnosis of melanoma among Hispanic, Black, and White patients. Arch Dermatol. 2006;142(6):704-708.
  3. Bradford PT, Goldstein AM, McMaster ML, Tucker MA. Acral lentiginous melanoma: incidence and survival patterns in the United States, 1986-2005. Arch Dermatol. 2009;145(4):427-434.
  4. Byrd KM, Wilson DC, Hoyler SS, Peck GL. Advanced presentation of melanoma in African Americans. J Am Acad Dermatol. 2004;50(1):21-24.

Trusted Resources

Skin cancer in dark skin is detectable and treatable when caught early. Check your palms, soles, and nails monthly — these simple steps save lives.