Allergy is a kind of metamorphic reaction of the organism, an abnormal reaction of the person to normal substances (allergens), which occurs only when allergens come into contact with allergic people, and there are hundreds of allergens such as pollen, dust, allogeneic proteins, chemical substances, ultraviolet rays, etc. In the process of allergic reactions, allergic mediators play a direct role. Allergens are the external cause of allergic diseases, while the low immunity of the body and the oxidative destruction of mast cells and basophils by a large number of free radicals are the internal cause of allergies.
Generally speaking, when the “allergen” enters the body for the first time, the mast cells or basophils combine to produce allergic factors such as leukotrienes and prostaglandins, but the allergy does not occur immediately; some of them will last for 2-3 days, some for several months. When the body receives the “allergen” for the second time, the mast cells are deformed and produce allergic factors, resulting in a series of allergic phenomena.
Causes of allergy
The causes of skin allergy include two major factors: intrinsic and extrinsic.
The intrinsic factor is having an allergic constitution, which plays a leading role in the development of skin allergy. Early and complete desensitization is the key to treating skin allergies to prevent recurrence.
There are also many extrinsic factors. These include diet, inhalants, climate, and exposure to allergens. Among them, seafood, protein, spicy food, wine, inhalation of pollen, dust mites, cold weather, exposure to chemicals, soaps and detergents are the most common triggers of skin allergy. Due to such complex causes, skin allergies are recurrent due to the intertwining of many causes and triggering factors, so it is important to use Park On Tong Allergy Repair Cream in a timely manner.
Internal causes of allergies
1. Damage to the skin structure
2. Decreased immune and protective functions of the skin.
External causes of allergy
1. exposure to wind, cold, heat, spice, sunlight, excitement, scratching, pressure, seafood, cosmetics, bites, dust, pollen, cold water, etc.
2, all kinds of counterfeit cosmetics or cosmetics that are not suitable for you
3.After herbal or chemical peeling
4, long-term external rubbing hormone-containing ointment or cosmetics
5, oily skin or acne healing after damage to the skin.
6, age: perhaps the growth of age is an important reason for skin sensitivity. Some people’s skin was not sensitive in previous years, but it has become sensitive in the past few years. This is because the surface of young healthy skin has a weak acidic sebum film to maintain moisture to protect the skin from external aggression, but as we age, this sebum film is not as healthy as before, so that some sensitive substances are prone to invade the skin.
7, pets: Sensitive skin is easy to produce allergies due to the fur of domestic pets. The reason for this allergy due to pets is mainly due to the proteins secreted by the oil glands of dogs and cats. When pets lick their fur, these proteins get on the fur and are scattered into the air and attached to the human skin.
8, seasonal changes: due to a variety of environmental factors, the air scattered bacterial spores and pollen and other allergenic substances will be released in large quantities of almost all tissues throughout the body compounds – histamine, causing facial skin allergies.
9, temperature changes: the temperature is hot and cold, so that sensitive people facial redness, hot.
10, ultraviolet light: UV radiation causes facial skin allergy.