Prevalence of the actinic keratoses various forms

In this article, the literary review of scientific literature on prevalence of various forms of actinic keratosis is carried out worldwide. Actinic keratosis often found preconcert dermatosis, which is connected with long, repeated intensive impact on skin of ultra-violet radiation. The centers of defeat are formed on open sites of skin, generally, on a face, a neck, forearms and brushes, owing to an intraepidermal dysplasia of various degree of expressiveness. According to some authors of actinic keratosis is an initial stage of development of plant cellular cancer of the skin. The high incidence of an actinic keratosis depends on the degree of intensity of sunlight. More often the disease develops at white-skinned inhabitants at 1-11 skin prototypes. Meets at 11-26% of white Americans aged from 40 years and is more senior, at 19-24% of residents of Great Britain, from 40 to 60% of the population of Australia. Are the reasons the intensive solar influence close arrangement to the equator, the relation of the most part of the population to so-called Celtic type at which the deficiency of factors of natural protection against ultraviolet is noted...