Skin Cancer
Excessive exposure to ultraviolet radiation (UV), whose main source is sunlight. The degree of exposure to this radiation depends on the intensity of light exposure time and whether the skin has been protected. People living in areas where they are exposed all year to strong sunlight are at greater risk. Being long-time outdoors for work or fun without suitable clothing and protect themselves with sunscreen increases risk. Tanning lamps and booths are other sources of ultraviolet radiation that can cause an increased risk of developing skin cancer melanoma. Exposure to certain chemicals such as arsenic, industrial tar, coal, paraffin and certain types of oils.
Exposure to radiation as produced by radiotherapy. Injuries or severe or prolonged inflammation of the skin, such as severe burns, the skin overlying the area where there was a serious bone infection, damaged skin and certain inflammatory diseases. Treatment of psoriasis with psoralen and ultraviolet light given to some patients with psoriasis. The xeroderma pigmentosum, a rare hereditary condition, reduces the skin’s ability to repair DNA damage suffered as a result of exposure to sunlight. People with this disorder develop numerous skin cancers, sometimes from childhood. Nevus syndrome Basal cell also is a rare congenital condition that causes multiple basal cell cancers. Most cases, though not all, are inherited