For some, itchy rashes appear, for others – painful blisters, and in certain diseases, ultraviolet rays can affect not only the skin but the entire body.
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1. Sun allergy – the most common cause
One of the most common sun-related conditions is polymorphic light eruption, also called sun allergy. It occurs when the immune system reacts abnormally to ultraviolet rays.
The first symptoms usually appear from a few minutes to a few hours after being in the sun. Itchy red spots, small nodules, or blisters appear on the skin. The most commonly affected areas are the hands, shoulders, neck, and chest – places that receive more sun for the first time after winter.
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This condition is much more often diagnosed in women, especially younger ones, and according to various studies in Europe, up to one-fifth of the population may suffer from it.
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