What is Skin Cancer?

A patient at Parkwood Skin Clinic showing a skin cancer at the back

Table of Contents

Skin cancer is a type of cancer that develops from abnormal and uncontrolled growth of skin cells. It occurs when skin cells are damaged, often by exposure to ultraviolet (UV) radiation from the sun or tanning beds, and the damage triggers mutations that cause the abnormal cells to grow and divide uncontrollably, forming a mass or tumour.

There are several types of skin cancers, including basal cell carcinoma, squamous cell carcinoma, and melanoma. Basal cell carcinoma and squamous cell carcinoma are more common non melanoma skin cancers and less likely to spread to other parts of the body, while melanoma is less common but more likely to spread. Melanoma can be deadly if not also detected early and treated early.

 

Prevention, early detection, and treatment are important for managing skin cancers.

man checking a lesion on his forearm

What Do Skin Cancers Look Like?

Skin cancers can present in different ways, but there are general characteristics of lesions that can be used to identify potential.

Basal cell carcinoma is the most common type of skin cancers, and squamous cell carcinoma is a scaly or crusted patch of skin with an inflamed, red base.

Melanoma is the deadliest type of skin cancers, and can present as a mole or a dark spot on the outer layer of the skin.

Regular self-examinations of the skin are important to look for changes in existing moles or the appearance of new growths.

Early detection and treatment of skin cancers can improve the chances of a successful outcome.

What are the symptoms of skin cancer?

The symptoms of skin cancer can vary depending on the type of skin cancer, but there are some common signs and symptoms that may indicate the presence of skin cancers.

These include a new, unusual growth or sore that doesn’t heal, changes in an existing mole or spot, itching, bleeding, or other changes in skin, and thickening or scaling.

It is important to note that not all changes or abnormal growths on the skin are cancerous, but any such new skin growths or changing spots should be examined by a doctor to determine if they require further evaluation or treatment.

Regular self-examinations of the skin can help with early detection of skin cancers.

How common is skin cancer?

Skin cancer is the most common type of cancer in Australia, and a common cancer all around the world.

The incidence of skin cancers has increased over the past few decades.

While anyone can develop skin cancers, certain factors can increase the risk of skin cancers, such as fair skin, a history of sunburns or excessive sun exposure, a family history of skin cancers, and a weakened immune system.

It is important to take steps to protect your skin from the sun and perform self-examinations to look for any changes or new growths on the skin.

Early detection and treatment of skin cancers can improve the chances of a successful outcome.

sign of caution regarding skin cancers

What Causes Cancers of the Skin?

Skin cancer occurs when skin cells are damaged by chronic exposure to UV radiation from the sun or tanning beds.

This damage triggers mutations that cause the abnormal cells to grow and divide uncontrollably, forming a mass or tumour.

Other factors that can contribute to the development risk of skin cancers include fair skin, a history of sunburns, excessive sun exposure, tanning beds, family history of common skin cancers, and weakened immune systems.

woman with skin cancer on her right cheek

What are the risk factors for skin cancers?

Risk factors that can increase the likelihood of increased risk of developing skin cancers include:

  • chronic exposure to UV radiation

  • fair skin

  • history of sunburns

  • family history

  • history of aggressive skin cancer

  • age

  • weakened immune system

  • exposure to certain chemicals

  • and certain medical or skin conditions.

When to see a doctor

It is important to see a doctor if you notice any changes or new growths on your skin, as these can be signs of skin cancer.

These signs include a new growth or mole, an existing mole or other skin growths that have changed in size, shape, colour, or texture, a sore that does not heal, itchy, painful, or tender areas, a spot or growth that looks like a scar, and a dark streak under a nail.

Regular skin checks are also important if you have a history of skin cancer or other risk factors. Early detection and treatment of skin cancer can improve the chances of a successful outcome.

How is skin cancer diagnosed?

Skin cancer is usually diagnosed through a combination of a physical examination and a skin biopsy.

During the physical examination, a doctor will examine the skin for any unusual growths, moles, or lesions, and ask about any symptoms or changes. A skin biopsy might be performed to determine if there are cancer cells present.

Additional tests may be necessary to determine the extent of the cancer and whether it has spread to other parts of the body.

If skin cancer is diagnosed, the doctor will determine the stage of the cancer and recommend a treatment plan based on the type and stage of the cancer, as well as the patient’s overall health and other individual factors.

Treatment options may include surgery, radiation therapy, chemotherapy, or immunotherapy.

How is skin cancer treated?

The treatment for skin cancer depends on the type, size, location, and stage of the cancer, as well as the patient’s overall health and personal preferences.

The most common treatment options for skin cancer include surgery, radiation therapy, topical medications, cryotherapy, photodynamic therapy, and immunotherapy.

Surgery is the most common treatment for skin cancer, while radiation therapy uses high-energy X-rays to kill cancer cells and has specific indications.

Topical medications can be applied directly to the skin, cryotherapy involves freezing the cancerous tissue with liquid nitrogen, photodynamic therapy involves applying a special cream to the skin and then exposing it to ultraviolet light from a special light source, and immunotherapy involves using medications to stimulate the body’s immune system to recognise and attack cancer cells.

It is important to work with a doctor who is experienced in skin cancer to develop an individualised treatment plan.

Are there complications of skin cancer treatment?

Skin cancer treatment can have potential complications, such as scarring, infection, pain and discomfort, nerve and skin damage, lymphoedema, recurrence, and side effects of medication.

It is important to discuss the potential risks and benefits of any treatment with a doctor before proceeding further treatment with.

In many cases, the benefits of treating skin cancer far outweigh the potential risks and complications, but it is important to be aware of the potential risks and seek prompt medical attention if any complications arise.

man with sutures following the excision of a skin cancer

Can skin cancer be prevented?

The most important steps to take sun protection and prevent skin cancer are to limit exposure to UV radiation, avoid indoor tanning, be aware of changes in skin, and maintain a healthy lifestyle.

These steps can help reduce the risk of developing skin cancer, but it is important to be aware of the signs and symptoms of skin cancer and to see a dermatologist if necessary.

Limiting exposure to UV radiation, avoiding indoor tanning, being aware of changes in skin, and maintaining a healthy lifestyle are all important steps to reduce the risk of developing skin cancer.

FAQ

Skin cancer is a serious health concern that can lead to significant health complications and even life-threatening complications. It is the most common type of cancer worldwide, with different types and severity. Melanoma is the most dangerous form and has the highest mortality rate.

Regular monitoring and follow-up appointments with doctors are essential to detect any potential recurrence or new skin cancer lesions.

Tanning can increase the risk of developing some types of skin cancer, due to too much exposure damaging the DNA of the skin cells.

UV radiation is the primary cause of skin cancer, and tanning is a major source of UV radiation. People who use tanning beds before the age of 35 have a significantly increased risk of developing melanoma, the deadliest form of skin cancer.

To reduce the risk of developing skin cancer, it is recommended to limit exposure to UV radiation by avoiding tanning beds, wearing protective clothing and hats, and using sunscreen with a high SPF rating.

While some of these symptoms of skin cancers may cause discomfort, such as itching or bleeding, they may not cause other symptoms typically associated with most skin cancers or with sickness, such as fever, nausea, or fatigue.

However, if the cancer has spread to other parts of the body, symptoms may vary depending on the location and severity of the spread. It’s important to see a doctor if you notice any changes in your skin, even if you don’t feel sick.

Early detection and treatment of skin cancer can lead to better outcomes and a higher chance of full recovery.

Regular skin examination are recommended to detect skin cancer early and improve the chances of successful treatment. A doctor regularly checks the skin for suspicious moles, growths, or changes in skin tones that could be signs of skin cancer. Individuals with a higher risk of developing skin cancer may need to have their skin checked more frequently.

Checking for skin cancer yearly is recommended to help detect the disease early and improve the chances of successful treatment.

Skin cancer can appear in different ways, depending on the type and stage of the disease. Basal cell carcinoma (BCC) is the most common type of skin cancer. It typically appears as a raised, flesh-coloured or pearly bump. Squamous cell carcinoma (SCC) is a firm, red bump or scaly patch of darker skin that may bleed or develop a crust. Melanoma is a less common but more dangerous form of skin cancer, and can appear as a raised bump, a flat spot with irregular borders and different colours, or a mole that changes in size, shape, or colour. Early detection and treatment of skin cancer can lead to better outcomes and a higher chance of full recovery.

Skin cancer can cause pain and discomfort in the early stages, but as it grows and spreads to nearby skin, it can cause damage to nerves and other structures. Basal cell carcinoma (BCC) is the most common type of skin cancer, but if left untreated, it can grow deep into the skin and surrounding tissues, causing damage to nerves and other structures. Squamous cell carcinoma (SCC) can also cause pain as it grows and invades deeper layers of the skin. It can spread to other parts of the body, causing pain and other symptoms. Early detection and treatment of skin cancer can lead to better outcomes and a higher chance of a full recovery.

The time it takes for skin cancer to spread depends on the type of skin cancer and other factors, such as the person’s immune system, age, and overall health. Basal cell carcinoma (BCC) is the most common type of skin cancer, and usually grows slowly and rarely spreads to nearby tissue, lymph nodes or other parts of the body.

Squamous cell carcinoma (SCC) can grow and spread more quickly than BCC, and can spread to lymph nodes and other organs. Melanoma is a less common but more aggressive type of skin cancer, and can spread rapidly and aggressively to other parts of the body.

Regular skin exams and self-examination surrounding healthy skin are important for people at higher risk of developing skin cancer.

If you notice any new or changing spots on your skin, it is important to see a dermatologist for evaluation and treatment.

Skin cancer is a serious health problem that can lead to serious health problems and even death, depending on the type and stage of the cancer. Regular skin exams and self-examination are important for those at higher risk of developing skin cancer.

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