Why do people have photosensitivity? What foods can cause photosensitivity?

In life, since many people have different physical constitutions, the symptoms they cause are also different. These are common allergy symptoms. Then many people will have photosensitivity. Why is this? What are the foods that cause photosensitivity?

Causes of photosensitivity

The so-called photosensitive substances are called porphyrins. After entering the human body, they will induce the skin to be allergic to ultraviolet rays in sunlight. Many foods contain porphyrins, mainly seafood, vegetables, fruits, as well as skin care products, medicines, etc. If these photosensitive substances are continuously replenished, it will lead to persistent photosensitivity; on the contrary, if you avoid eating photosensitive foods during treatment, the photosensitive substances in the body will be slowly consumed, and there is hope for natural recovery in the end;

Foods that trigger photosensitivity

Seafood,

Mainly snails, shrimps, crabs, clams, etc.;

Green vegetables;

Gray vegetables, snow vegetables, lettuce, fennel, amaranth, shepherd's purse, celery, radish leaves, spinach, coriander, rapeseed, mustard. In addition, most wild vegetables contain photosensitive substances; these green vegetables look more, but in fact, in spring they are mainly celery, spinach, coriander, etc.;

Fruits;

Figs, oranges, lemons, mangoes, pineapples. Of course, they are not completely inedible, but should be eaten in small amounts; some people believe that grapes are also photosensitive foods.

Dried vegetables.

This type is rare, the most common of which is wood ear. This point is particularly important;

Western medicine.

Sulfonamides, aspirin, sodium salicylate, tetracycline, chlordiazepoxide, oral contraceptives, etc. It is important to know that there is an anti-allergic drug, chlorpheniramine, which also causes photosensitivity, so don't take anti-allergic drugs on your own as soon as you see allergies; in addition, if a certain drug can cause photosensitivity, it is usually clearly written in its instructions;

Chinese medicine also has photosensitivity

Mainly Chinese medicines that can dispel wind, such as Angelica dahurica, Notopterygium wilfordii, Nephrolepis chinensis, Saposhnikovia divaricata, Angelica dahurica, Peucedanum chinense, etc., as well as the most common phototherapy Chinese medicine Bupleurum chinense, etc.;

External cosmetics, etc.;

It can be said that there are photosensitive ingredients in general cosmetic additives, including sunscreen, isolation cream, etc.; as well as soap, perfumed soap, etc.; in clinical practice, patients with photosensitive dermatitis are often stubborn and difficult to treat. Careful investigation reveals that they wash their hands with soap, etc.; therefore, it is best to wash with only water;