Chronic Urticaria - Classification - By Cause - Solar Urticaria

Solar Urticaria

This form of the disease occurs on areas of the skin exposed to the sun; the condition becomes evident within minutes of exposure. After the individual is no longer exposed to the sun, though, the condition starts to weaken within a few minutes to a few hours, and hardly ever lasts longer than 24 hours. Solar urticaria is classified into six different types, depending upon the wavelength of light involved. Since glass absorbs light with a wavelength of 320 nm and below, people suffering from solar urticaria in response to wavelengths of less than 320 nm are protected by glass.

Read more about this topic:  Chronic Urticaria, Classification, By Cause

Other articles related to "solar urticaria, urticaria":

Solar Urticaria - History
... Solar urticaria was first identified by P ... Just a year later, in 1905, Ward became the first to induce urticaria through exposure to the sun in a controlled environment ... The name "solar urticaria" was proposed in 1923 ...

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