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Photo – Dermatosis

With the advent of summer, patients are increasingly turning to the clinic, worried that sun exposure causes skin rashes, itching, headache, nausea, weakness, fluctuations in blood pressure, dizziness. Many are surprised: they used to sunbathe before, but there was nothing of the kind … Why?

Before answering this question, I recall that although ultraviolet rays penetrate only into the surface layers of the skin, they have a pronounced local and general effect on the body. In small doses, they stimulate blood formation processes, the production of enzymes, antibodies, and activate immunobiological processes. These properties of ultraviolet rays have long been widely used for the prevention and treatment of many diseases.

Photo of the seashore, summer beach And here, with excessive exposure or increased sensitivity of the body to ultraviolet rays, unexpected reactions may appear. Usually, increased sensitivity develops with age, and this is due to the fact that the rapid running of time adds to us not only years, but also diseases. Metabolism, the activity of the cardiovascular, urinary, neuroendocrine systems are disturbed … Diseases of the stomach and intestines, liver, food or drug allergies also affect the body’s resistance to solar radiation.

Allergists and immunologists using modern examination methods have proved that such patients do not have allergic, but so-called false-allergic reactions. In the blood serum of patients there are no protein substances (antibodies), the presence of which indicates the development of allergic reactions. General and local manifestations of false-allergic reactions are the result of exposure to biologically active substances such as histamine, heparin, acetylcholine and others, which are released from the cells under the influence of sunlight.

You need to know that there are also photo sensitizers – some substances of animal and vegetable origin, chemical and pharmaceutical preparations – which can cause the development of photo-dermatosis. At the same time, histamine and other biologically active substances are also formed.

Absorbed into the general bloodstream, they increase the permeability of the walls of the capillaries, dilate blood vessels. irritate nerve cells and sensitive nerve endings. As a result, those unpleasant sensations arise (about which we spoke at the beginning of the article), forcing a person to immediately consult a doctor.

True allergic reactions to solar insolation are rare. They are characterized by: urticaria (blistering rash) and angioedema, accompanied by skin itching.

In any case, when the first signs of intolerance to sunlight appear, you need to see a doctor in order to identify its cause and begin treatment as soon as possible. It is completely unacceptable to use any creams or drugs on the advice of friends. This will only complicate the diagnosis and reduce the effectiveness of subsequent treatment.

I would like to warn tan lovers: do not turn the sun from a friend into an enemy. Everything is good in moderation, and tan – especially. And one more thing to keep in mind: medication and sunbathing are incompatible. If the doctor considers. If you need to take medicine, give up the dubious pleasure of having a tan. Keep in mind that with intense irradiation of the skin, some medications can cause hemolysis, that is, damage to red blood cells.

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