Medically reviewed by Dr. C. Raghavendra Reddy, MBBS (Gold Medal), DNB, DM (Medical Oncology, Gold Medal) · Last reviewed May 2026
Skin cancer is one of the most common cancers worldwide — and one of the most curable when caught early. Most skin cancers begin as a small, often painless change: a new mole, a sore that won't heal, or a patch of skin that simply looks different from the rest. Knowing what to look for, and acting promptly, can make the difference between a minor outpatient procedure and a serious treatment journey.
Skin cancer occurs when cells in the skin grow uncontrollably, usually after DNA damage caused by ultraviolet (UV) radiation from the sun or tanning beds. Over time, this damage can cause healthy skin cells to mutate and form a malignant tumour that, if neglected, may invade deeper tissue or spread to other parts of the body.
While skin cancer is the most common cancer globally, it has historically been less common in India because darker skin tones offer some natural UV protection. That picture is shifting — outdoor occupations, longer life expectancy, and lower sun-protection habits are pushing skin cancer cases up, particularly squamous cell carcinoma. The good news: the vast majority of skin cancers are highly treatable when detected early.
Most skin cancers are visible to the naked eye long before they spread. That makes a 60-second self-check the single most powerful early-detection tool in oncology. Cure rates for basal cell and squamous cell carcinoma exceed 95% when caught at this stage — and even melanoma, the most dangerous form, has a 5-year survival above 98% at Stage I.
Skin cancer is not a single disease. The three most common types account for nearly all cases, and each behaves differently.
The most common skin cancer globally. BCC develops in the deepest layer of the outer skin and usually appears on sun-exposed areas — the face, head, neck, and shoulders. It typically looks like a pearly bump, a flat flesh-coloured patch, or a sore that scabs and bleeds. BCC very rarely spreads to other organs, and cure rates with prompt treatment exceed 95%.
The second most common type globally — and the most common skin cancer seen in Indian patients. SCC usually appears as a red, scaly patch, an open sore, or a wart-like growth on sun-exposed areas like the face, ears, hands, and lips. Unlike BCC, SCC can spread to lymph nodes if neglected, which is why early diagnosis matters.
The most dangerous form of skin cancer. Melanoma develops in the pigment-producing cells (melanocytes) and can appear anywhere on the body — including areas the sun rarely reaches. It often shows up as a new mole or a change in an existing one. Although melanoma accounts for a small share of skin cancer cases, it causes the majority of skin cancer deaths because it can spread quickly. When caught early, however, melanoma is highly curable.
Less common skin cancers include Merkel cell carcinoma, cutaneous lymphoma, Kaposi sarcoma, and dermatofibrosarcoma protuberans (DFSP). These are managed at specialist oncology centres after multidisciplinary tumour board review. For detailed information on diagnosis and treatment options across all subtypes, see our dedicated page on skin cancer treatment in Hyderabad.
Most skin cancers are visible to the naked eye long before they spread, which makes self-examination the single most powerful early-detection tool. Watch for:
For moles and pigmented lesions, the ABCDE rule is the simplest international guide to spotting possible melanoma.
One half of the mole doesn't match the other.
Irregular, ragged, or blurred edges rather than smooth and well-defined.
More than one shade — brown, black, red, white, or blue within the same lesion.
Larger than 6 mm (about the size of a pencil eraser), though some melanomas can be smaller.
Any change in size, shape, or colour, or new symptoms like bleeding or itching.
Healthy moles on the same person tend to look similar to each other. A mole that visibly stands out from the rest — larger, smaller, lighter, darker, or oddly shaped compared to its neighbours — is called an ugly duckling, and is worth examining. The American Academy of Dermatology recommends combining the Ugly Duckling sign with the ABCDE rule for the most reliable self-screening.
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Darker skin offers some natural UV protection — but it is not a shield. In Indian patients, squamous cell carcinoma is more common than basal cell carcinoma, the reverse of the Western pattern. Skin cancers in Indian skin are also more likely to develop in unusual or less sun-exposed areas — the palms, soles, nails, mouth, and genital region — and this often delays detection because patients (and even general physicians) may not associate these areas with skin cancer.
If you notice a new spot, non-healing ulcer, or pigmented change in any of these areas, see an oncology specialist promptly — even if the area was never sun-exposed.
The single biggest cause of skin cancer is ultraviolet (UV) radiation — from the sun or tanning beds. Other risk factors that raise your baseline risk include:
Most skin changes are harmless — but the ones that aren't are usually highly treatable when caught early. See a cancer specialist if you notice:
A short clinical examination — often followed by a small biopsy under local anaesthesia — is enough to confirm or rule out skin cancer. Early action is always easier than catching up later.
CION Cancer Clinics is India's fastest-growing cancer care network, dedicated exclusively to oncology. Our NABH-accredited centres across Hyderabad deliver evidence-based skin cancer care — from biopsy through to surgery, advanced melanoma immunotherapy, and reconstructive coordination — guided by NCCN and ESMO protocols and reviewed for every patient by a multidisciplinary tumour board.
For a detailed walk-through of skin cancer diagnosis, surgical and medical treatment options, Mohs surgery, advanced melanoma protocols, costs, and our specialist team, see our dedicated page on skin cancer treatment in Hyderabad.
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Start Your Story. Book Free Consultation.The most common first sign is a change you can see — a new growth or mole, a sore that does not heal within 3–4 weeks, or an existing mole that changes in size, shape, or colour. Skin cancer often does not cause pain in its early stages, which is why a visible change is usually the first clue. Self-examination once a month is the single most powerful early-detection tool: most skin cancers are visible to the naked eye long before they spread.
Appearance varies by type. Basal cell carcinoma often looks like a pearly or waxy bump, or a flat, pink-ish patch of skin. Squamous cell carcinoma typically appears as a red, scaly patch or a wart-like sore that bleeds. Melanoma usually appears as a new mole, or as a change in an existing mole — irregular shape, multiple colours, or rapid growth. Any persistent skin change that looks unusual deserves an examination.
Yes — the vast majority of skin cancers are curable, especially when caught early. Basal cell carcinoma and squamous cell carcinoma have cure rates well above 95% with prompt surgical treatment. Even melanoma, the most dangerous form, has excellent outcomes at Stage I and Stage II. Modern immunotherapy has dramatically improved survival even for advanced melanoma. The earlier the diagnosis, the simpler the treatment — and the better the outcome.
Melanoma is the most dangerous skin cancer because it can spread rapidly to lymph nodes and distant organs. However, when detected early, it is highly curable — five-year survival rates exceed 98% at Stage I. Merkel cell carcinoma is another rare but aggressive subtype that requires specialist oncology care. Both are managed at specialist centres after multidisciplinary tumour board review.
People with frequent sun exposure, outdoor occupations, fair skin, a personal or family history of skin cancer, a weakened immune system, or chronic non-healing wounds are at higher risk. Risk also rises significantly after age 50. In Indian patients, agricultural workers and those with arsenic exposure (in drinking water or industrial settings) face elevated risk for squamous cell carcinoma. Pigmented spots on the palms, soles, or under nails also warrant prompt review — these locations are easy to miss.
