Dr. Nguyen Viet Hau, Head of the Emergency Department, University of Medicine and Pharmacy Hospital, Ho Chi Minh City, explained that for some women with previous neurological symptoms such as tension headaches, migraines, etc., washing their hair and then going out in the sun can easily cause headaches and dizziness due to sensitivity to sudden temperature changes. For normal people, there is absolutely no such problem.
The idea that washing your hair before going out in the sun will cause headaches and dizziness is incorrect.
According to Dr. Nguyen Viet Hau, the view that "after being in the sun, people should shower immediately when they get home" or "due to the hot weather, they should shower regularly" are both incorrect. Because when the body is in the sun, the ambient temperature is quite high, and showering immediately when coming home leads to a sudden change in temperature, the thermoregulatory center must operate continuously.
On the contrary, we should not bathe immediately but should rest, wait for sweat to dry for about 30 minutes before bathing. In addition, we should not bathe many times a day to avoid the body's temperature changing continuously, which is not good for health.
Some points to note to prevent diseases on hot days
To prevent conditions caused by hot weather or seasonal changes, when exposed to sunlight for long periods of time or high temperature environments, we should take the following measures:
Wear long-sleeved, airy clothes, wear a wide-brimmed hat, limit exposure to strong sunlight between 10am and 4pm. If you have to work or operate in a high temperature environment, every hour you should move to a cool place, rest for about 15 minutes, then return to work. Be proactive in drinking water, do not wait until you are thirsty to drink. We should drink mineral-containing drinks such as electrolyte solutions to treat diarrhea, lemon juice mixed with salt, sugar, etc.
Be proactive in drinking water, don't wait until you're thirsty to drink.
According to Dr. Nguyen Viet Hau, in hot weather or during the changing seasons, we must pay more attention to respiratory diseases. The reason is that people tend to stay in air-conditioned rooms for too long, use strong fans or eat and drink cold foods and drinks or drinks with ice... Such activities unintentionally dry out the mucous membranes and mucus of the respiratory tract. This causes beneficial bacteria to die, creating favorable conditions for foreign viruses and bacteria to easily invade and cause diseases such as: viral infections, upper respiratory tract infections...
High environmental temperatures easily cause food to spoil, along with the development of disease vectors such as flies, mosquitoes, cockroaches... which can easily cause food poisoning, especially mass poisoning cases.
When the temperature increases, it will lead to increased sweating and sebum secretion. Especially in children or the elderly with diseases that require prolonged bed rest, they are susceptible to bedsores, and fungi grow more in skin folds such as armpits, groin...
Some less-noticed infectious diseases such as measles, mumps, and hand, foot, and mouth disease also often appear during this time. For children of primary or secondary school age, parents often pay little attention to checking the vaccination schedule. Ideally, after 3 to 5 years, we should vaccinate children again to prevent infectious diseases during the hot season.
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