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Anonymous users2024-02-13Allergy to sunlight is called photopathy or anaphylaxis. Including solar dermatitis, polymorphic light eruption, vegetative solar dermatitis, etc.
1. Solar dermatitis is caused by allergy to light, mostly in the exposed area, and its mechanism is that when the tissue is irradiated by light, antigenic substances are formed, which sensitizes the body and leads to allergic reactions. The disease is susceptible to light-skinned people, and it is more common in women.
2. Polymorphic light eruption is a delayed allergic reaction to sunlight exposure, and the pathogenic spectrum is mainly medium-wave ultraviolet rays, and some patients can induce the disease by long-wave ultraviolet rays and visible light. The onset of the disease may be related to the epidermal pigment content, age, endocrine function and deficiency of certain trace elements (such as zinc and copper), and is more common in young and middle-aged women.
3. Plant-solar dermatitis is an acute phototoxic inflammatory reaction caused by eating certain plants after sun exposure. The occurrence of this disease is often related to physical constitution, related plants and long-term sun exposure. Photosensitive vegetables such as milk vetch, gray cabbage, mustard greens, marantou, purslane, acacia flower, etc.
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Anonymous users2024-02-12When I saw the sun yesterday, my whole body itched to death. Today is also a day when I see the sun, my whole body is itchy to death, I am allergic to the sun all over my body, and I have been allergic to the sun for five years
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