Itching is a common condition in cold, dry weather. Itching accompanied by a rash can also be a warning sign of underlying medical conditions.
In cold, dry weather, many people, especially those with atopic dermatitis, feel their skin dry and tight, itchy and have to scratch, and lesions may even appear in various areas of the body.
According to doctors at the Central Dermatology Hospital, the skin has a protective layer that helps prevent water from evaporating and protects the skin from harmful environmental influences. However, in people with atopic dermatitis or sensitive skin, this protective layer is easily damaged, causing the skin to lose water, leading to dry skin, bacteria can easily penetrate and cause damage, redness, blisters, itching, discomfort, etc.
Besides, in the dry season, the ability to secrete natural organic substances and sweat to help the skin become oily, elastic and resistant to the invasion of bacteria of the skin is reduced, causing the skin to become dry and cracked, causing itching.
Hives is one of the most common skin diseases that causes red, itchy rashes. This condition occurs when capillaries under the skin become irritated and cause itchy, raised bumps or patches of rash, which can make the patient uncomfortable and itchy all day long, although it does not threaten health.
Scabies infection also causes the patient to itch the most at bedtime. This is due to the migrating scabies irritating the sensory nerve endings in the skin and partly due to the toxins secreted by the female scabies when burrowing.
According to doctors at Dang Van Ngu Hospital, itching and red rashes all over the body like mosquito bites are also signs of other diseases, not just skin diseases; these are signs of underlying diseases.
- Drug and food allergies: Itching and rashes on the skin are common signs when patients have mild drug allergies, which can go away on their own after a few days or after stopping the medication. In severe cases, red rashes appear all over the body, accompanied by difficulty breathing and cyanosis...
- Lupus erythematosus: For people with this disease, itching and redness often appear on the face. The disease occurs when the immune system attacks healthy cells in the skin and causes inflammation; at a severe level, it can cause serious complications such as heart failure, kidney failure, etc.
- Liver disease: When the "factory" that filters toxins out of the body, the liver, is not functioning properly, toxins can accumulate in the body and cause symptoms on the skin. The patient may have a red rash like a mosquito bite on the back, chest or all over the body.
- Parasitic worm infection: In addition to red rash on the skin, the patient also feels constantly itchy. This may be because after entering the body, the parasitic worm larvae will penetrate the intestinal wall and enter the bloodstream, stimulating the immune system to increase IgE and causing allergies.
- Thyroid disease: In addition to fatigue, constipation, and weight gain, people with hypothyroidism also have itchy red rashes like mosquito bites on their skin.
- Red itchy rash like mosquito bites can also occur due to dengue fever, diabetes, even HIV...
When experiencing itching and rashes that affect sleep; redness and itching spreading all over the body; skin showing signs of infection such as pus, red and swollen skin areas or rashes accompanied by symptoms of fever, abdominal pain, diarrhea, and difficulty breathing, people should see a doctor soon.
Source: https://giadinh.suckhoedoisong.vn/ngua-canh-bao-tinh-trang-nguy-hiem-khong-chi-la-benh-ngoai-da-khi-troi-hanh-kho-172241108231422038.htm
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