In modern society, people will use some cosmetics to make up their facial features so that their faces will look more three-dimensional, beautiful and intuitive. And sometimes we will use some cheaper things, which will hurt our skin allergies or contact with certain allergens will cause our skin to have some allergic symptoms. These are all things we should avoid because our skin is very fragile and we must do our best to maintain it. So let’s take a look at why skin allergies occur! 1. Causes The cause of sensitive skin is not fully understood but is the result of multiple factors. It can be divided into endogenous factors such as race, age, gender, genetics, endocrine factors, certain diseases, etc., and exogenous factors such as chemical stimulation, environmental factors, lifestyle, psychological factors, etc. 1. Endogenous factors (1) Race: Different races have different numbers of stratum corneum, intercellular adhesion, amount and volume of melanin, etc., which leads to differences in skin sensitivity. (2) Young people are more likely to have skin sensitivity than the elderly, which may be due to the decline in sensory nerve function and reduced nerve distribution in the skin of the elderly. (3) Gender: Generally speaking, women are more sensitive to skin irritation than men, probably because women’s skin has a higher pH value and is less able to buffer irritation. (4) Most individuals with genetically sensitive skin have a family history of sensitive skin. (5) Endocrine factors: The menstrual cycle can affect skin sensitivity. (6) Diseases Certain skin diseases can increase skin sensitivity, such as atopic dermatitis, seborrheic dermatitis, ichthyosis, etc. 2. Exogenous factors (1) Chemical factors such as cosmetics, soaps, detergents, etc. (2) Environmental factors such as cold, heat and rapid changes in temperature, seasonal changes, air pollution, sunlight, etc. (3) Lifestyle: Spicy and stimulating food and alcohol can aggravate skin reactions. (4) Psychological factors such as increased stress and emotional instability often stimulate or aggravate skin reactions. 2. Clinical manifestations Patients with sensitive skin often experience itching, tingling, prickling, burning, and tightness. The severity varies from person to person. After using cosmetics, the discomfort becomes more severe, and some people cannot even tolerate any skin care products. It can appear within minutes, hours, or even days after use. Dry skin, facial erythema, and fine scales may sometimes be seen. The face flushes easily. Clinical types can be divided into: 1. Environmental type It is common in fair, dry, and thin skin, and mainly reacts to environmental factors, such as sensitivity to cold, heat, and rapid temperature changes. Facial flushing may occur frequently. 2. Cosmetic type Reactions mainly occur to cosmetics. 3. Very sensitive Severe reactions may occur to exogenous factors such as cosmetics, environmental factors, and endogenous factors. |
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