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Key Information About Skin Cancer

Updated on August 17, 2021
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Srikanth is passionate about helping people improve their quality of life.


Skin cancer occurs when the body does not repair damage to the DNA inside skin cells, allowing the cells to divide and grow uncontrollably.

The incidence of both non-melanoma and melanoma skin cancers has been increasing over the past decades.

Currently, between 2 and 3 million non-melanoma skin cancers and 132,000 melanoma skin cancers occur globally each year. One in every three cancers diagnosed is a skin cancer.

Wikimedia Commons
Wikimedia Commons | Source

Skin cancer is the most common type of cancer among light skinned individuals. It is the commonest cancer in the United States and in Australia. Each year, about one million people are diagnosed with this cancer. In 85 percent of these cases, the skin damage leading to the cancer occurs before an individual is 18.

— Ananya Mandal, MD


Actinic Keratoses (AK)
Basal cell carcinoma (BCC)
Squamous cell carcinoma (SCC)

Melanoma is the most deadly type of skin cancer, and we think unfortunately rates are still going up due to high levels of unprotected skin exposure and people are still using tanning beds.

— Dr. Elizabeth Hale, Dermatologist, Senior Vice President of the Skin Cancer Foundation.


People with a family history of skin cancer are generally at a higher risk of developing the disease.

People with fair skin and a northern European heritage appear to be most susceptible.

Hypertension medicine hydrochlorothiazide is associated with an increased risk of nonmelanoma skin cancer, found a study conducted in February 2021. It was published in the British Journal of Clinical Pharmacology.

You may develop skin cancer later in life, if you:

  • had severe sunburn or blistering as a child
  • have been exposed to sunlight all your life
  • use tanning beds or sunbeds
  • have a history of severe skin damage, e.g. burnt skin
  • have a history of moles on your skin
  • have been exposed to certain chemicals like coal tar, soot, petrol products, etc
  • have had radiotherapy in the past
  • have a weak immune system from taking certain medications that suppress your system.
  • have a rare inherited condition like albinism or xeroderma pigmentosa.

If left untreated, some actinic keratoses can develop into squamous cell skin cancers.


Symptoms of skin cancer are: small lumps or scar-like changes on the skin which do not heal; small, often painless, sore with raised borders (ulcer) on the skin; a patch of scaly eczema; a sore that will not heal or that develops into a tumour; an existing mole which begins to change colour, increase in size or bleed; the mole may itch, with sores or reddening in the surrounding area; and a new mole develops with ragged edges and uneven colours, varying from brown or black to blue or orange.

On the surface, many people may not see signs of skin cancer but with the VISIA UV camera system, UV photographs are capable of revealing existing skin damage caused by UV light exposure which is normally invisible to the naked eye.

May is skin cancer awareness month.


If your doctor suspects skin cancer they may refer you to a dermatologist. The specialist should be able to confirm the diagnosis by carrying out a physical examination. They may also perform a biopsy.

A tool, created by researchers Kumar Abhishek, Jeremy Kawahara, and Ghassan Hamarneh at Simon Fraser University, predicts appropriate clinical management steps based on an image of a diseased area of skin.


Treatment depends on the location, type, and severity of the disease. Commonly used treatments are: chemotherapy; removal of affected cells or tissues through surgery; immunotherapy; killing or freezing cancer cells in liquid nitrogen; and application of ointments or creams on scars and patches.

A research study presented on December 3 2019 at the Radiological Society of North America’s annual meeting suggests high dose rate brachytherapy may be an option for some people with skin cancer.



Foods that are rich in beta-carotene (like carrots, mangoes, kale, sweet potatoes, and squash), lutein (like collard greens, spinach, and kale), lycopene (like watermelon, guava, apricots, and tomatoes), selenium (like Brazil nuts, meats, and breads), vitamin A (like sweet potatoes, egg yolks, and some dairy products), vitamin C (like fruits, berries, cereals, and fish), and vitamin E (like nuts and oils) reduce the risk of skin cancer.

Another way to protect yourself from skin cancer is by protecting your skin from getting too much of the sun's ultraviolet light.

It's especially important to avoid getting sunburned, as this increases the risk of melanoma.

Using sunscreen and wearing protective clothing, including a hat with a brim, are good ways to do this.

According to a research study conducted in Sweden in the year 2009, people with obesity who undergo bariatric surgery have a reduced risk of developing skin cancer, including melanoma.


Are you taking adequate steps to protect yourself and your loved ones from skin cancer?

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This content is accurate and true to the best of the author’s knowledge and does not substitute for diagnosis, prognosis, treatment, prescription, and/or dietary advice from a licensed health professional. Drugs, supplements, and natural remedies may have dangerous side effects. If pregnant or nursing, consult with a qualified provider on an individual basis. Seek immediate help if you are experiencing a medical emergency.

© 2019 Srikanth R


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    • srirad0675 profile imageAUTHOR

      Srikanth R 

      2 years ago

      True; awareness has improved.

    • Eurofile profile image

      Liz Westwood 

      2 years ago from UK

      Awareness of the dangers of sun exposure has improved in recent years. I cringe when I see the sight of burned bodies in a holiday resort.


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