Thursday, 28 July 2011

skin cancer causes

Exposure to ultraviolet (UV), usually the sun is by far the most common cause of skin cancer.

Other important causes of skin cancer are:

The use of solariums

Immunosuppression-weakened immune system that protects the body from foreign entities such as germs or substances that cause allergic reaction. This can be caused by any disease, or may be due to medications prescribed to combat autoimmune diseases or prevent organ transplant rejection.

Exposure to unusually high levels of X-rays

Contact with certain chemicals and arsenic (miners, factory sheep shearing, and farmers), hydrocarbons in tar, oil and soot (may cause squamous cell carcinoma)

The following people are most at risk:

People with fair skin, especially types that freckle, sunburn easily, or become painful in the sun

People with light (blond or red) hair and blue or green eyes

People with certain genetic diseases that destroy the pigment in the skin such as albinism, xeroderma pigmentosum

People who have been treated for skin cancer

People with many moles, unusual moles or moles that were present in large birth

People with close relatives who have developed skin cancer

People who had at least one severe sunburn early in life

Carcinomas and basal cell carcinomas are more common in the elderly. Melanomas are more common among young people. For example, melanoma is the most common cancer among people 25 to 29 years.

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