What is skin allergy? What are the causes of skin allergy?

People have different physical conditions, and the causes of allergies are different. Some people have allergies because they eat foods that are prone to allergies, such as seafood and mangoes, some people have allergies because of sun exposure, and some people have allergies because of using inappropriate cosmetics. So, what are the specific causes of allergies?

1: Internal factors: Allergic constitution plays a major role in the onset of skin allergies. As we age, the secretion function of the skin deteriorates. The skin becomes thinner with the passage of time, and its protective layer function also weakens.

2: External factors: Long-term exposure to sunlight or air pollution, smoke, dust, ultraviolet light UVA and UVB, and infrared rays can damage the skin because the ions they produce can destroy the skin's lipid protective layer.

3: Contact: beauty cosmetics, metal accessories, chemical fiber fabrics, animal fur, paint, dyes, etc. Cosmetics: alcohol, pigments, fragrances, preservatives, sunscreens, hair dyes, cold perms, etc. are all likely to cause allergies.

4: Weather: In the face of changing weather, the skin also needs extra adaptation. For example, in cold weather, if the skin is not adequately moisturized, it will be easily damaged.

5: Physiological factors: Stress, mental tension and depression will weaken the skin's natural resistance, causing its self-repair function to slow down, such as endocrine disorders.

1: Mild cases: local skin redness, itching, and rash; severe cases: skin swelling, peeling, more allergic pimples, and exudation; severe cases: large areas of peeling, and even systemic symptoms such as fever and fatigue.

Allergic reaction is the abnormal reaction of the human body to normal substances. When a person comes into contact with an allergen, an allergic reaction will occur.