What Are the Different Sensitivity Symptoms?
The exact meaning of sensitive skin has not yet been agreed. Sensitive skin is generally considered to be a highly intolerant skin condition, which is susceptible to various factors and can cause multi-factor syndromes such as stinging, burning, tightness, itching, and other subjective symptoms. The skin appearance is normal or accompanied Mild desquamation, erythema, and dryness.
- English name
- sensitive skin
- Visiting department
- dermatology
- Common causes
- Endogenous factors such as gender, heredity, endocrine factors, diseases, etc.
- Common symptoms
- Conscious itching, tingling, acupuncture, burning, tightness
Basic Information
Causes of Sensitive Skin
- The cause of sensitive skin is not completely clear, it is the result of a combination of 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 substance stimulation, environmental factors, lifestyle, psychological factors and so on.
- Endogenous factor
- (1) Race Due to the difference in the number of stratum corneum and the adhesion between cells, the amount and volume of melanin, etc., there are differences in skin sensitivity.
- (2) Age Young people are more prone to skin sensitization than old people, which may be due to the sensory nerve function and nerve distribution of the elderly.
- (3) Gender In general, women are more sensitive to skin irritation than men, which may be due to the higher pH of women's skin, and their buffering capacity for stimulus is poor.
- (4) Most individuals with genetically sensitive skin have a family history of sensitive skin.
- (5) Endocrine factors The menstrual cycle will affect the sensitivity of the skin.
- (6) Diseases Some skin diseases can increase skin sensitivity, such as atopic dermatitis, seborrheic dermatitis, and ichthyosis.
- 2. Exogenous factors
- (1) Chemical factors such as cosmetics, soap, detergents, etc.
- (2) Environmental factors such as rapid changes in cold, heat, and temperature, seasonal changes, air pollution, and sunlight.
- (3) Lifestyle Spicy food and alcohol can aggravate skin reactions.
- (4) Psychological factors Increased stress and emotional mobility often stimulate or exacerbate skin reactions.
Clinical manifestations of sensitive skin
- Patients with sensitive skin are mostly itchy, tingling, acupuncture, burning, and tight. The severity varies and there are individual differences. After applying cosmetics, the discomfort worsens, and some can't even tolerate any skin care products. It can appear within minutes after use, or within hours or even days. Sometimes you can see dry skin, facial erythema, and small scales. Facial flushing easily. Clinical types can be divided into:
- Environmental type
- It is common in skin with white, dry and thin skin, and it mainly responds to environmental factors, such as sensitivity to cold, heat, and rapid temperature changes. Frequent facial flushing can occur.
- 2. Cosmetic type
- It mainly reacts to cosmetics.
- 3. Very sensitive
- Exogenous factors such as cosmetics, environmental factors and endogenous factors can all have serious reactions.
Sensitive skin test
- It belongs to skin chemical detection test, including lactic acid test, sodium lauryl sulfate test, chloroform-methanol mixed liquid test, dimethyl sulfoxide test, acetamide test, water washing test, and capsaicin test. There are two representative methods of lactic acid test: 10% lactic acid aqueous solution is applied to the nasolabial folds and cheeks with a cotton swab at room temperature; Allow the subject to sweat sufficiently in a small room at 42 ° C and 80% relative humidity. Then apply 5% lactic acid solution to the nasolabial folds and cheeks. At 2 1/2 minutes and 5 minutes, the degree of tingling was judged by a 4-point method. It is worth noting that individuals who test positively are not necessarily sensitive skin.
- With the help of biomedical engineering technology, non-invasive techniques are used to measure biophysical parameters to evaluate minor changes in skin, such as skin transepidermal water loss measurement using a skin moisture evaporation meter, silicone replication and scale measurement to evaluate skin 2D or 3D Surface structure, skin colorimetric spectrometer to measure skin color, laser Doppler flow meter to measure skin blood flow, A-type ultrasound instrument to check thickness of epidermis, dermis and subcutaneous tissue. Measuring the transepidermal water loss of the skin is the most classic indicator.
Sensitive skin treatment
- For the treatment of general sensitive skin, the first step is to avoid re-irritation and minimize the beauty measures such as steaming the face, massaging and exfoliating. Cosmetics designed for sensitive skin can be selected, which often contain vitamin B 5 , carboxymethyl -glucan, and the like. Because the skin is dry, use a moisturizer with the appropriate proportion of lipids. For patients with severe symptoms that affect daily life, oral antihistamines and topical non-hormonal anti-inflammatory drugs can be used to relieve symptoms.
Sensitive skin prevention
- As far as possible, individuals with sensitive skin should use cosmetics with simple ingredients and little or no sensitizers and irritants. In daily skin care, adhere to the following three basic principles: use mild, non-irritating cleaning agents and humectants; maintain skin with moisture to maintain healthy stratum corneum function; replenish skin oils to strengthen the skin barrier.