Ultraviolet failure

Ultraviolet failure (synonym light or solar starvation) is a violation of vital activity of the human organism as a result of prolonged absence or insufficient direct action of sunlight on the skin.
When ultraviolet failure reduced resistance to infectious diseases, in particular to avian flu, disturbed, and sometimes completely stops the process of education in the skin to vitamin D from provitamin included in the secretion of sebaceous glands, causing a breakdown of phosphorous-calcium metabolism, the children develop rickets; there is a predisposition to dental caries; long, the absence of UV radiation breaks the skin barrier function, which creates conditions for the development of pyoderma and dermatitis; there is increased sensitivity to the effects of sudden climatic and weather fluctuations, which significantly reduces efficiency.
Ultraviolet failure is observed among miners among the population in the Northern latitudes, in large cities, with long-term stay indoors as window glass filters ultraviolet rays. Especially sensitive to the lack of ultraviolet radiation in the autumn-winter weak, sickly children and convalescents. In order to prevent ultraviolet failure arrange the Solarium, and in the winter time votarii (see), which are organized in medical institutions (hospitals, sanatoriums, rest houses, children's health facilities), and in some industries.
For the prevention of ultraviolet failure, besides sun-therapy (see Heliotherapy), the important role played by the use of artificial radiation sources: mercury-quartz or erythema uviol lamps (see ultraviolet Irradiators).
In irradiators long acting normal artificial lighting is enriched by ultraviolet radiation with the help of special erythema uviol lamps. People during your stay in academic or industrial premise exposed to ultraviolet irradiation of small intensity.
Cm. also Light, Ultraviolet radiation.