How to define solar urticaria?
Solar urticaria is a rare condition of urticaria, which is induced by exposure to ultraviolet or UV radiation, or sometimes even visible light.
You may have an increased risk for solar urticaria if you have dermatitis, or have a family history of this conditions, and regularly use perfumes, dyes, etc.
The main symptoms of solar urticaria are reddish patches on your skin, other symptoms also include headache, low blood pressure, nausea, breathing problems, etc.
The followings are some pictures of solar urticaria, you can check them as references:
Keyword: solar urticaria