What are the causes of itchy skin in summer?

A common cause of itchy skin in summer is rinsing with cold water after sweating, which can block sweat pores and cause prickly heat.

Prickly heat is a common acute inflammation of the skin in summer. It is caused by blocked sweat pores. Rinse with cold water when sweating will cause blocked sweat pores, poor perspiration, and produce prickly heat. Therefore, after sweating, be sure to dry it with a towel and then rinse it with warm water. Also be careful not to enter an air-conditioned room directly when you are sweating profusely, as this can easily lead to the occlusion of sweat pores. If you have prickly heat, you should pay special attention to changing sweaty clothes in time, bathe frequently with warm water, keep the skin dry, and use some prickly heat powder to relieve itching and reduce inflammation. It is best to avoid tobacco, alcohol, spicy and greasy food; the indoor environment should not be humid and the temperature should be appropriate to reduce sweating and facilitate sweat evaporation. If a small superficial pustule the size of a pinhead appears at the top of the prickly heat, it is likely to indicate that it will develop into prickly heat, and you should go to the hospital for medical treatment.

Summer dermatitis is mostly caused by excessive sweating. Summer dermatitis is a skin disease with a higher incidence rate in summer, and the culprit is sweat. Summer dermatitis is the skin disease most clearly related to summer climate conditions and manifests as small red miliary papules. Scratches, blood scabs, exudate, skin hypertrophy and pigmentation may appear after itching and scratching. If not treated in time, exudate may appear. It mostly occurs on the trunk and inner limbs of adults. The condition improves significantly when the temperature drops. The concentration of metabolites in sweat is closely related to the severity of summer dermatitis symptoms. The composition of sweat is similar to that of urine. It contains a large amount of metabolic waste from human tissues, such as urea, uric acid, lactic acid, sodium chloride, etc. These metabolic wastes are all acidic substances, which are highly irritating to the skin and can cause the skin to produce Chemical inflammatory reaction causes capillary dilation and accumulation of inflammatory cells in the skin. The higher the concentration of metabolic waste products in sweat, the stronger the chemical inflammatory reaction in the skin, and vice versa. When the human body sweats a moderate amount, the content of metabolic waste in the sweat is the highest, and summer dermatitis is most likely to occur at this time. The high temperature and muggy weather in summer cause the body to sweat more. If it cannot be removed in time, the chemical components in the sweat can irritate the skin and cause summer dermatitis.

To prevent summer dermatitis, pay attention to ventilation, absorb sweat, and wash sweat frequently with warm water. Some girls like to wear non-cotton tight-fitting clothes in summer. Poor breathability can easily bring opportunities for summer dermatitis. You should drink more water at ordinary times to dilute the harmful components in sweat.

If you suffer from summer dermatitis, you can apply topical medicine to relieve itching under the guidance of a doctor. Be careful not to scald the affected area with hot water to relieve itching. After being scalded with hot water, the subcutaneous blood vessels will expand further, the redness and swelling will increase, and the exudate will increase, which is detrimental to recovery. If you sleep on mats or spray toilet water, be careful of skin diseases. People are accustomed to sleeping on mats in summer. Some people experience itching and small red bumps on the parts of their body that come into contact with mats. This is a symptom of mite dermatitis caused by mats. It is easy for parasitic mites to live in the gaps of mats. When they bite people's skin, small red bumps will appear, causing itching and pain. Therefore, in addition to frequently scrubbing with warm water, the mat should also be placed in the sun to dry from time to time. For people who tend to sweat, it is best to put a layer of sweat-absorbent cotton on the mat before going to bed. In addition to mite bites, some people also have allergic reactions to grass and reed mats. They will have bean-sized light red bumps on their skin that are itchy and unbearable. This is a contact skin disease. People with allergic reactions should sleep on bamboo or rattan mats.

Toilet spray and sunscreen may also cause contact dermatitis. In summer, many people use toilet water to prevent prickly heat and repel mosquitoes. Some people are allergic to the components of toilet water, and their skin will develop redness, pimples and other reactions after use. Contact dermatitis is a delayed allergic reaction that has a certain incubation period, and symptoms often appear several days after the first exposure. Therefore, for a new toilet water, do not spray it on a large area when using it for the first time. If no skin abnormalities appear after a few days, use it on a large area. The same is true for sunscreen. It is best to apply it on the skin above the wrist for a few days. If there is no reaction, apply it to the face.

The air in summer is humid, which is the season when fungal diseases are prone to occur. Every two days, you can boil all the towels at home in boiling water for disinfection. If it is not convenient to boil them, you can expose them to the sun. The ultraviolet rays in the sun are natural bactericides.