Skin cancer refers to the abnormal and uncontrolled growth of skin cells, most often caused by prolonged exposure to ultraviolet (UV) radiation from the sun, tanning beds, or other artificial sources. UV rays can damage the DNA within skin cells, triggering changes that lead to excessive cell growth and the formation of tumours, which may be benign or malignant.
The three primary types of skin cancer are Basal Cell Carcinoma (BCC), Squamous Cell Carcinoma (SCC), and Melanoma. BCC typically appears as a shiny bump or scaly patch and grows slowly. SCC often presents as a red, crusted, or scaly lesion that may ulcerate. Melanoma, the most aggressive form, arises from pigment-producing cells and may develop from an existing mole or appear as a new dark spot on the skin.
Common Skin Cancer Symptoms
Skin cancer can appear in different forms and may often resemble harmless skin changes. Recognising skin cancer symptoms early is key to effective treatment.
1. Visible Warning Signs on the Skin
Skin cancer can appear in many ways, often resembling common skin changes. Key skin cancer symptoms to look out for include:
- New lumps, moles, or lesions that persist or change over time. While some benign growths, such as seborrheic keratoses, can appear suddenly, persistent or unusual lesions require medical evaluation.
- Changes in the colour, size, or shape of an existing mole.
- Sores that do not heal even after several weeks.
2. Advanced Symptoms to Watch Out For
As skin cancer progresses, additional symptoms may develop, such as:
- Itching, bleeding, or persistent pain in a mole or lesion.
- Spread of pigmentation beyond the border of a mole (a sign more specific to melanoma).
- Thick, scaly patches or rough skin areas.
3. The ABCDE Rule for Skin Cancer Detection
The ABCDE rule helps identify warning signs of melanoma:
- A – Asymmetry: One half of the mole looks different from the other.
- B – Border: Edges are irregular or blurred.
- C – Colour: Multiple shades or uneven colouring.
- D – Diameter: Larger than 6mm (about the size of a pencil eraser).
- E – Evolving: Any change in size, shape, or colour over time.
Use this checklist for regular self-monitoring and consult a dermatologist for any suspicious changes.
Major Causes of Skin Cancer
Skin cancer most commonly develops when the DNA of skin cells is damaged, often due to prolonged exposure to harmful ultraviolet (UV) rays. Over time, this damage triggers abnormal cell growth, leading to cancerous changes. Several other factors can also increase the risk.
1. Ultraviolet (UV) Radiation Exposure
Prolonged UV exposure is the primary cause of non-melanoma skin cancers (BCC and SCC) and also contributes to melanoma. However, certain melanomas, such as acral lentiginous melanoma, occur in areas not typically exposed to sunlight. Natural sunlight and artificial sources such as tanning beds damage skin cell DNA, leading to abnormal cell growth.
2. Genetic & Family History
Inherited genetic mutations can increase susceptibility to skin cancer. A family history of melanoma or other skin cancers significantly raises the risk, especially in fair-skinned individuals.
3. Weak Immune System
People with weakened immune systems—such as organ transplant recipients or those with chronic illnesses—are more prone to developing skin cancer. The body’s reduced ability to detect and destroy abnormal cells makes them more vulnerable.
4. Environmental & Lifestyle Factors
- Exposure to specific harmful substances like arsenic or tar increases skin cancer risk, particularly for squamous cell carcinoma. Not all industrial chemicals pose this risk.
- Smoking contributes mainly to cancers of the lips and oral skin, not commonly to melanoma or other typical skin cancers.
- Certain human papillomavirus (HPV) infections are also linked to squamous cell carcinoma, especially in the genital region.
Risk Factors that Increase Chances of Skin Cancer
Some factors make specific individuals more likely to develop skin cancer, including:
- Fair skin, light hair, and light-coloured eyes.
- Excessive sun exposure without using sunscreen.
- Repeated history of sunburns, particularly during childhood.
- Increasing age, as cumulative sun damage builds over time.
When to See a Doctor?
Early detection of skin cancer significantly improves treatment success. You should see a doctor if you notice:
- New or changing skin growths.
- Moles or lesions that itch, bleed, or refuse to heal.
Diagnosis of Skin Cancer
Venkateshwar Hospitals provides advanced diagnostic services for skin cancer, led by a skilled team of dermatologists and oncologists. The hospital ensures early and precise detection through a combination of expert evaluation and modern technology.
- Comprehensive skin examination using advanced dermatoscopy for detailed assessment of lesions.
- Skin biopsy performed to collect tissue samples for microscopic evaluation and confirmation.
- Pathology tests are used to determine the exact cancer type and stage.
- Imaging techniques such as CT, MRI, and PET scans are used in advanced cases to assess potential spread.
- Sentinel lymph node biopsy for melanoma cases to evaluate lymphatic involvement.
With its multidisciplinary approach and cutting-edge facilities, Venkateshwar Hospitals ensures accurate diagnosis, customised treatment planning, and better clinical outcomes for patients with skin cancer.
Prevention and Skin Protection Tips
Preventing skin cancer starts with consistent protection and awareness. Here are essential tips:
- Use a broad-spectrum, water-resistant sunscreen with SPF 30 or higher every day, and reapply every two hours when outdoors.
- Seek shade and avoid direct sun exposure during peak UV hours (10 a.m.–4 p.m.)
- Avoid tanning beds and unnecessary UV exposure.
- Perform regular self-examinations for new or changing moles.
- Schedule routine dermatology check-ups at Venkateshwar Hospitals for early detection and expert advice.
Why Choose Venkateshwar Hospitals for Skin Cancer Care?
Venkateshwar Hospitals provides comprehensive and specialised care for all types of skin cancer, combining medical expertise with advanced technology to ensure accurate diagnosis and effective treatment.
- A multidisciplinary team of experienced dermatologists and oncologists.
- Advanced diagnostic tools such as high-resolution imaging and dermatoscopy.
- Personalised treatment plans based on each patient’s condition and stage of cancer.
- Focus on compassionate, patient-centred care from diagnosis to recovery.
Prognosis
The prognosis for skin cancer varies depending on several individual and tumour-related factors. The most significant factor is the stage at diagnosis, which indicates how deeply the cancer has penetrated the skin and whether it has spread to the lymph nodes or other parts of the body. Other important factors include the tumour’s thickness, location, type, grade, and the presence of ulceration or invasion into nearby tissues. Successful and complete surgical removal of the tumour with clear margins greatly improves the chances of recovery. A patient’s overall health and immune function also play a crucial role in determining treatment response and the likelihood of recurrence. It is essential to discuss your specific case with a qualified doctor to understand your individual prognosis and treatment options.
Frequently Asked Questions
1. What are the first warning signs of skin cancer?
The first signs usually include new moles, changes in existing moles, or non-healing sores on the skin.
2. Can skin cancer be caused by sun exposure alone?
Not always. While prolonged UV radiation from the sun or tanning beds is the most common cause, some skin cancers develop due to genetic mutations, weak immune systems, or exposure to carcinogens like arsenic.
3. How can I tell if a mole is cancerous?
Use the ABCDE rule—check for asymmetry, irregular borders, varied colours, large diameter, or evolving appearance.
4. Who is most at risk of developing skin cancer?
People with fair skin, light hair, excessive sun exposure, a family history of skin cancer, outdoor occupations, or weakened immune systems are at higher risk.
5. Is skin cancer preventable?
The risk can be significantly reduced but not entirely prevented, as some cases arise from uncontrollable genetic or immunological factors.
6. How is skin cancer diagnosed at hospitals?
Doctors conduct a skin examination and may perform a biopsy to confirm the diagnosis.
7. Can skin cancer spread to other parts of the body?
Melanoma and advanced skin cancers can spread to nearby lymph nodes or organs if not detected early.
8. Does skin cancer only affect fair-skinned people?
No. While fair skin increases risk, people of all skin tones can develop skin cancer.
9. How often should I get checked for skin cancer?
Annual dermatology check-ups are recommended, especially for those with high sun exposure or family history.
10. Why should I choose Venkateshwar Hospitals for skin cancer treatment?
Venkateshwar Hospitals provides specialised, technologically advanced, and compassionate skin cancer care from diagnosis to treatment and follow-up.
Medically Reviewed by — Dr. Siddharth Sahai ( Director – Medical Oncology )
