Our expert says:
Anon, it is possible to allergic to sunlight or heat, but it doesn’t sound like it is the problem in your case. It sounds like it might be due to an environmental allergen like pollen. You can try taking and antihistamine like Clarinese® or Deselex® every day and see if it makes a difference. If it doesn’t the best would be to see your doctor about it. Good luck.
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