I always feel very hot these days. What is the reason?

What is heatstroke?

Heatstroke refers to the symptoms of disorder of body temperature regulation, disorder of water and electrolyte metabolism and impairment of nervous system function under the long-term effect of high temperature and thermal radiation. Patients with brain diseases, the elderly and the infirm, and women with poor heat tolerance are particularly prone to heatstroke. Heatstroke is a life-threatening emergency. If it is not treated quickly and forcefully, it will lead to convulsion and death, permanent brain damage or renal failure. The core temperature of 465438 0℃ is a sign of serious prognosis. A slight increase in body temperature often leads to death. Old age, weakness and alcoholism can aggravate the prognosis.

The cause of disease

There are many reasons for heatstroke. If you work in a workshop with high temperature and poor ventilation, it is easy to get heatstroke. In agriculture and open-air operations, the direct exposure of the sun, coupled with the exposure of the earth, makes the atmospheric temperature rise again, making people's meninges congested and cerebral cortex ischemic, causing heatstroke, and the increase of humidity in the air is easy to induce heatstroke; In public places and families, people are crowded and concentrated, heat production is concentrated, and heat dissipation is difficult.

Symptoms of heatstroke

Heatstroke refers to an acute disease characterized by the disorder of central nervous system and circulatory system caused by the disorder of body temperature regulation in high temperature environment. In addition to exposure to the hot sun, excessive work intensity, long time, lack of sleep and excessive fatigue are also common reasons.

According to the severity of clinical manifestations, heatstroke can be divided into threatened heatstroke, mild heatstroke and severe heatstroke, and the relationship among them is gradual.

★ Symptoms of threatened heatstroke

In the high temperature environment, there are symptoms such as headache, dizziness, thirst, sweating, weakness and pain of limbs, inattention, uncoordinated movements and so on.

Body temperature is normal or slightly elevated.

If it is moved to a cool and ventilated place in time and supplemented with water and salt, it can be recovered in a short time.

★ Mild heatstroke symptoms

The body temperature is often above 38 degrees.

In addition to dizziness and thirst, it is often manifested as flushing, sweating, burning skin, etc., or cold limbs, pale face, decreased blood pressure and accelerated pulse.

If handled in time, it can often be recovered within a few hours.

★ Symptoms of severe heatstroke

As the name implies, it is the most serious type of heatstroke, and it will be life-threatening if it is not treated in time. This kind of heatstroke can be divided into four types: heat spasm, heat exhaustion, heatstroke and heatstroke.

Characteristics of symptoms of heat spasm: it mostly occurs when the concentration of sodium chloride in blood drops rapidly and obviously due to excessive sweating and thirst, excessive drinking water and insufficient salt supplementation. When this kind of heatstroke happens, the muscles will suddenly have paroxysmal spasmodic pain.

Symptoms and characteristics of heatstroke: this kind of heatstroke mostly occurs in the elderly and people who can't adapt to the high temperature for a while. The main symptoms are dizziness, headache, palpitation, thirst, nausea, vomiting, cold skin, decreased blood pressure, syncope or confusion. At this time, the body temperature is normal or slightly higher.

Symptoms and characteristics of heatstroke: The cause of this kind of heatstroke is just like its name, because under the direct irradiation of the scorching sun, strong sunlight penetrates the skin and skull of the head and causes brain cell damage, which in turn causes brain tissue congestion and edema; Because the main injury is the head, the initial discomfort is severe headache, nausea and vomiting, irritability, and then coma and convulsions may occur.

Symptoms and characteristics of heatstroke: Some people have been engaged in manual labor in a high temperature environment for a long time, and the body produces too much heat, but the heat dissipation is insufficient, resulting in a sharp rise in body temperature. At the beginning of the onset, a lot of cold sweat broke out, followed by no sweat, shallow breathing, rapid pulse, restlessness, confusion and decreased blood pressure, which gradually developed into coma with limb convulsions; Severe cases can produce brain edema, pulmonary edema, heart failure and so on.

Countermeasures

What should I do after heatstroke?

When you find yourself and others with symptoms of threatened heatstroke and mild heatstroke, the first thing to do is to quickly evacuate the high temperature environment that causes heatstroke and choose a cool and ventilated place to rest; And drink more salty and cold drinks. You can also apply cool oil, wind oil essence, etc. On the forehead and temples, or take Ren Dan, ten drops of water, Huoxiang Zhengqi water and other traditional Chinese medicines. If your blood pressure drops and you collapse, you should lie flat immediately and go to the hospital for intravenous drip of normal saline in time.

For severe heatstroke patients, in addition to immediately transferring them from high temperature environment to a cool and ventilated place, they should also be sent to the hospital quickly and take comprehensive measures for treatment. If you are far away from the hospital, you should keep the patient away from the high temperature environment, wrap the patient with wet sheets or clothes and give him a strong fan to increase evaporation and heat dissipation. It is also a good idea to soak the patient in a lake or river while waiting for transfer, or even use snow or ice to cool him down. If the patient is shivering, the cooling process should be slowed down, because shivering can increase the core body temperature (warning: the body temperature should be measured every 10 minute/time. Don't let the body temperature drop to 38.3℃, so as not to continue to cool down and cause hypothermia. In hospitals, the core body temperature should be continuously monitored to ensure its stability. Avoid stimulants and sedatives, including morphine; If convulsions cannot be controlled, diazepam and barbiturates can be injected intravenously. Electrolyte should be determined frequently to guide intravenous fluid infusion. After severe heatstroke, it is best to stay in bed for a few days, and the body temperature can still fluctuate within a few weeks.

protect

★ Travel to avoid the scorching sun

Remember to prepare sunscreen equipment when you go out in summer. 10- 16 It's best not to walk in the scorching sun, because the sun is strongest at this time, and the possibility of heatstroke is 10 times as usual! If you must go out at this time, you must take good protection, such as umbrella, sun hat and sunglasses, and if possible, it is best to apply sunscreen; Prepare plenty of water and drinks. In addition, in the hot summer, you can take heatstroke prevention and cooling drugs, such as ten drops of water, Ren Dan, essential oil, etc. It must be kept at hand in case of emergency. When going out, try to choose cotton, linen and silk fabrics, and wear less chemical fiber clothing to avoid heat dissipation in time when sweating a lot, resulting in heatstroke.

The elderly, pregnant women, patients with chronic diseases, especially those with cardiovascular diseases, should try to reduce outdoor activities in the hot season.

★ Don't wait for thirst to drink water.

Don't wait for thirst to drink water, because thirst already shows that your body is short of water. Ideally, drink 1.5 to 2 liters of water every day according to the temperature. When sweating a lot, you can add some salt water appropriately to make up for the salt lost by sweating. In addition, the human body is prone to potassium deficiency in summer, which makes people feel tired and weak. Potassium tea is an excellent summer drink.

★ diet

Vegetables eaten in summer, such as lettuce, cucumber and tomato, have high water content; Fresh fruits, such as peaches, apricots, watermelons and melons, have a water content of 80% to 90% and can be used to supplement water. In addition, dairy products can not only replenish water, but also meet the nutritional needs of the body. Secondly, people who can't avoid working in a high temperature environment should appropriately supplement drinks containing elements such as potassium and magnesium.

★ Keep enough sleep.

In summer, the days are long and the nights are short, the temperature is high, the human body has a strong metabolism, consumes a lot, and is prone to fatigue. Adequate sleep can relax the brain and body system, which is not only beneficial to work and study, but also a measure to prevent heatstroke. The best time to sleep is from 22: 00 to 23: 00, and the best time to get up is from 5: 30 to 6: 30. Be careful not to lie under the air conditioning outlet and electric fan when sleeping, so as not to get air conditioning disease and catch a cold.