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Melanoma in Nigeria: Early Signs of Skin Cancer and the Role of Genetics

A clinical photograph taken in Nigeria showing a dermatologist examining a patient's palm, juxtaposed with an integrated DNA graphic, illustrating the connection between personal screening and genetics for Melanoma in Nigeria.

Skin cancer is often misunderstood in Africa, with many people believing it only affects individuals with lighter skin tones. However, melanoma, which is the most aggressive form of skin cancer, can also affect people with darker skin. Unfortunately, because awareness remains low, many cases in Nigeria are detected at later stages when treatment becomes more difficult.

Understanding the early signs of melanoma and knowing whether genetics or family history may increase your risk can help you take proactive steps toward better health.

At Syndicate Bio, we believe that education, early detection, and access to genetic insights can help individuals and families make more informed healthcare decisions.

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What is Melanoma?

Melanoma is a type of skin cancer that develops in melanocytes, the cells responsible for producing skin pigment. Although it is less common than other forms of skin cancer, melanoma can spread quickly to other parts of the body if not detected early.

According to the World Health Organization, early detection plays a major role in improving survival outcomes for skin cancer patients worldwide.

In individuals with darker skin, melanoma may be seen in the following areas and not limited to sun-exposed areas:

  • The palms of the hands
  • The soles of the feet
  • Under the fingernails or toenails
  • Areas with unusual dark patches or non-healing wounds
A split clinical image illustrating how Melanoma in Nigeria presents on dark skin tones, showing an irregular dark lesion on the sole of a foot (left) and a dark streak under a fingernail (right).

Early Signs of Skin Cancer and Melanoma

Most people may not immediately recognise the warning signs of skin cancer. In some cases, suspicious skin changes are mistaken for infections, injuries, or ordinary skin conditions. Recognising possible symptoms early is one of the most important steps in melanoma prevention.

A helpful method doctors use is the ABCDE rule:

  • A – Asymmetry: One half of a mole or spot looks different from the other
  • B – Border: The edges appear uneven, irregular, or blurred
  • C – Colour: Different shades of brown, black, red, or other colours appear within the same spot
  • D – Diameter: The spot is larger than about 6mm
  • E – Evolving: The mole or skin lesion changes in size, colour, shape, or texture over time

Other warning signs may include:

  • A dark line underneath the nail
  • A sore that does not heal
  • Bleeding or itchy skin lesions
  • New or unusual dark patches on the palms or sole

If you notice any persistent or unusual skin changes, it is important to seek medical evaluation promptly.

Family tree diagram showing patterns of family cancer risk across generations

Can Melanoma Run in Families?

Yes. While environmental factors can contribute to skin cancer risk, genetics can also play a role.

Some individuals inherit gene mutations that increase their likelihood of developing melanoma. This is known as hereditary melanoma.

A person may have a higher hereditary cancer risk if:

  • Multiple family members have had melanoma or other cancers
  • Relatives were diagnosed at younger ages
  • There is a history of pancreatic cancer or multiple cancers in the family

Certain inherited mutations, including changes in genes like CDKN2A, have been linked to increased melanoma risk.

Understanding your family history can help identify whether genetic testing or earlier screening may be beneficial.

You can also read our article on Family Cancer Risk and Hereditary Cancer Screening to learn how inherited conditions can affect long-term health decisions.

Who Should Consider Genetic Screening?

Genetic testing can help identify inherited mutations associated with hereditary cancers, including melanoma. You may benefit from speaking with a healthcare professional or genetic specialist if you:

Have a family history of melanoma or skin cancer

Notice suspicious skin changes

Have a personal history of unusual moles or skin lesions

Want a clearer understanding of your hereditary cancer risk

Early awareness can help individuals make proactive decisions about screening and prevention. Speak with a specialist to learn more about available screening and genetic testing options.

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Taking the Next Step

Melanoma in Nigeria is still under-recognised, but awareness is growing. Skin cancer can affect people of all skin tones, and early detection remains one of the most effective ways to improve outcomes. Understanding your genetic profile is information that can help guide smarter health decisions for you and your family.

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Your family history is a roadmap, not a diagnosis. Early awareness could make a life-saving difference for you and your loved ones.