Weather in Space

The Sun

Are some people allergic to the Sun?

There are two rather odd reactions some people have to the Sun. One, allergic conjunctivitis, is relatively harmless. This is when sudden exposure to the Sun, such as when leaving a darkened building, causes a sneezing reaction inspired by the Sun’s ultraviolet radiation. It can also cause redness and itchiness in the eyes, which is easily remedied with sunglasses and antihistamines. More serious is something called “Sun poisoning,” which causes a rash known as polymorphous light eruption (PLE), with itchy bumps and swelling of the skin. Even suntan lotion does not prevent this reaction for people who are ultra-sensitive to the Sun’s rays. Topical corticosteroids are typically prescribed by doctors to treat the rash.


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