Skin allergy is a very common form of allergy, and 20% of people have skin allergies. From a medical point of view, skin allergy mainly refers to when the skin is subjected to various stimuli such as adverse reactions to cosmetics, chemical preparations, pollen, certain foods, polluted air, etc., causing skin redness, itching, peeling and allergic dermatitis and other abnormal phenomena.
Skin allergies
1 Etiology and pathogenesis
2 Clinical manifestations
3 skin allergy pictures
4 Diagnosis
5 Differential diagnosis
6 Prevention
7 Western medicine treatment
8 Nursing
Etiology and pathogenesis
With age, the secretory function of the skin degenerates, and the skin becomes thinner with the passage of time, and its protective layer function also weakens.
Long-term exposure to sunlight or air pollution, smog, dust, UVA and UVB, and infrared rays, can damage the skin because the free ions they produce can damage the skin's lipid protective layer.
Inferior cosmetic or improper drug damage.
Physiological factors, such as stress, mental stress and depression, can weaken the skin's natural resistance, causing its self-healing function to slow down. such as endocrine disorders.
Weather: Faced with changes in the weather, the skin also needs additional adaptations. For example, in cold weather, if the skin is not fully moisturized, it will be easily damaged.
Additives: Ingredients in some skin care products, such as preservatives, dyes, emulsifiers, and fragrances, have the potential to sensitize the skin.