Why does the skin of the person itch in winter?

There are many reasons for skin itching, which can be simply divided into four categories: inflammation, dryness, infection or itching caused by internal diseases. The most common cause is itching caused by skin inflammation, which is called eczema. For example, children's atopic dermatitis often causes extreme itching of the skin, and even causes allergic children to sleep and eat badly; Fatty dermatitis often causes scalp and facial itching in elderly patients; Housewives with rich hands, coin eczema, lichen planus, drug allergy, urticaria, etc. Are they all itching caused by skin inflammation? Dry skin is also one of the main causes of itching. With the increase of age, sebaceous glands will gradually degenerate, which often makes the skin moisturizing ability of middle-aged and elderly people worse than before. The skin is dry and peeling, and even chapped and bleeding, especially in the lower limbs. Drying itself can cause itching discomfort, because the winter climate is very cold, which is more common in winter itching caused by drying. This kind of itching caused by dry crack should avoid taking a bath with too hot water, and use moisturizing emulsion as appropriate to improve the symptoms. Beriberi and itching of crotch caused by fungal infection of skin are more common in summer. Skin scabies infection is common in military, boarding schools and other crowded places, which often causes extreme itching at night until the patient scratches and bleeds. What worries me most is that there are some systemic diseases, initially manifested as itchy skin. For example, diabetes, renal dysfunction, cholestasis, hyperthyroidism or insufficiency, or some blood diseases, malignant tumors, etc., will cause unexplained skin itching.

Itchy skin is caused by dryness;

Since 1970s, scientists have reported an increase in the frequency of skin dryness worldwide. No one knows the exact reason. Part of the reason is that the human body is exposed to chemicals, pollution and acid rain. Our expectation for the skin has gone from pink to make the skin look smooth, cover up the flaws, and achieve moisturizing.

Dry skin is also a widely discussed problem. There is no standard definition of dry skin. You can only realize that the skin is dry through the symptoms: peeling, tightness, stripes, allergies and itching. The direct cause is the damage of the outermost skin, which is composed of skin cells, lipids and other substances that help to preserve skin moisture. When the lipid balance is broken and the skin loses moisture, skin cells usually fall off unconsciously and accumulate into white skin debris.

Experts say that many people's dry skin is caused by environmental conditions, but stress is another inducement. Recent research shows that experts have found that the higher people's anxiety, the slower their skin permeation barrier (substances that keep moisture and prevent allergies) will recover.

Age is another reason for skin aging, because the lipid level will gradually decrease with time, especially when the estrogen level decreases after menopause. Adolescent girls seldom need to hydrate their skin. After a few years, their skin will sound the alarm of water shortage. A customer of a skin care company said: "My college roommate always rubs hydrating things on his body after taking a shower. I remember I always thought she was like a dancer from abroad, so I had to oil herself.

Our environment, including cold wind, hot sun and central air conditioning, takes away moisture from the skin. But the real harm comes from people's indulgence of daily habits. Young women often take a bath two or three times a day and use washing products that irritate the skin (but can't replenish water). Actually, the body can't bear it. Soap will contain lipids. If you don't apply emulsion in time after bathing, water evaporation will take away the water inside the skin in order. Dry skin is not only unsightly and itchy, but also susceptible to bacteria, allergens and chemicals with the deterioration of the environment. These problems in turn make the skin worse, make the skin lose more moisture, and the effect of self-expression repair is getting worse and worse.

The causes of dry skin are as follows

First of all, the growth of age

With the increase of age, the skin's ability to preserve water will decrease, and sebum secretion will also decrease, making the skin moist.

Second, sebum secretion is insufficient.

The skin surface is formed by sebum membrane, which can help the skin maintain proper moisture. Once the secretion of sebum is reduced, it can not meet the needs of making sebum film, and the skin will become dry.

Third, the temperature drops.

In the cold winter, the secretion of sebum and sweat will decrease rapidly, but because the air is too dry, the moisture of the skin will gradually evaporate, the skin surface will become rough and the resistance will be weakened.

Fourth, lack of sleep and fatigue

Lack of sleep and fatigue will do considerable harm to the body and worsen blood circulation. If the health is out of balance, the skin will be lifeless and prone to dryness and roughness.

5. Lose weight and partial eclipse

Extreme weight loss and partial eclipse can also dry the skin. When the skin can't get enough nutrition, it will lose elasticity and moisture, making the skin dry and fragile. Xeroderma is also called xeroderma.

Other reasons of intransitive verbs

Indoor heating temperature is too high, bathing with overheated water, using irritating soap or detergent, endocrine changes, such as decreased estrogen secretion in postmenopausal women.

What kind of skin is dry?

Take a quiz,

Look at your skin. Is it a "critical period of drought"?

(1) My whole face feels tight.

(2) When touching with the palm of your hand, there is no moist feeling.

(3) The skin of other parts of the body is dry.

(4) Some parts are dried and peeled.

(5) I feel itchy after taking a shower.

If you have three of the above five items, it means that your skin is already giving you an alarm, and you should take measures as soon as possible.