When it comes to summer heat, the natural concern is to prevent heatstroke. Because the heat is unbearable, people are worried about avoiding heatstroke, which in the past era (especially in ancient times), no matter how to prevent, a large number of people continue to occur heatstroke, and even lost medical treatment and died. Why? Because in the era of low productivity, people had to survive, even if the weather was hot, they had to run those dried seedlings in the fields, as evidenced by the poem: “Weeding day is noon, sweat drops under the earth.” “The red sun is as hot as fire, and the wild fields of rice and grass are half withered and scorched.” How is it possible that heatstroke does not occur under such living conditions! Nowadays, people’s productivity has improved greatly and their ability to overcome nature has increased, so they are no longer afraid of the cold in winter and the heat in summer. In the summer, people have a variety of ways to prevent heatstroke, farmers have semi-mechanized production, no longer need to be exposed to the sun, the treatment of migrant workers to improve, you can avoid the heat at noon, the night light to make up for the work, the occurrence of “heat stroke” is greatly reduced. And a variety of cold drinks, summer drinks flood the market, people can live in a comfortable environment created by the air conditioning, no longer worry about the heat is unbearable. In fact, heatstroke is far less common than people who get sick from the cold. When the contrast between the outside temperature and the indoor temperature is too great, people’s bodies will not be able to eat. Because the body’s ability to regulate and speed is also limited, when you repeatedly in and out of the high and low temperature environment, the body’s blood circulation, neurohumoral regulation is too late to adjust the state to adapt to the repeated changes in temperature differences, resulting in disorders in the regulatory system, resulting in a variety of uncomfortable symptoms occur. Common diseases such as air conditioning disease, gastrointestinal flu, etc. The air conditioning environment is too low, or repeatedly in and out of the air conditioning and non-air conditioning environment, the body is prone to disease; a large number of cold drinks, the gastrointestinal tract can not adapt to the gastrointestinal flu will occur; sleep state is the body’s lower defensive capabilities, when the window is open, very easy to catch a cold, especially in the middle-aged and elderly people can not directly sleep in the environment with air conditioning cooling. What are the manifestations of cold sickness? The main conditions I have seen in the clinic are as follows: 1. fever, headache, dizziness, body tightness, numbness, weakness and anorexia at most; 2. upper respiratory tract infection symptoms, pharyngitis, nasal congestion and runny nose; 3. facial neuritis, local peripheral neuritis of the skin; 4. abdominal pain and diarrhea, nausea and vomiting, dyspnea, hypokalemia, etc. How to treat? Symptomatic treatment, hot treatment of cool disease. Drink a lot of warm water to make the body sweat to get rid of the cold, rehydration for diarrhea and potassium for hypokalemia. Use antibiotics for co-infection. Prevention: to strengthen the science of publicity, the summer air conditioning temperature can not be too low; can not be a large number of rapid intake of cold drinks; sleep situation to maintain the appropriate temperature, not too low; do not sleep on the wind; to a lot of water, to maintain adequate sleep; do not take a cool bath, not swimming in low-temperature waters to relieve the heat. Of course, see those who challenge the limits, you may be eager to try, but do not imitate Yo!