Yesterday on the bus, it was very hot, my chest was stuffy, and then I fainted when it was dark, and then I vomited. What happened?

Heatstroke is a disease caused by the feeling of pathogenic factors in summer, which is characterized by sweating, irritability, thirst, dizziness, convulsions, nausea and abdominal pain due to high fever or dry skin.

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. In addition to exposure to high temperature and scorching sun, mental stress, too many people, too much work intensity, too long time, lack of sleep and fatigue are all common reasons.

Assuming that it is not heatstroke, cardiovascular organic diseases, hypertension, central nervous system organic diseases, obvious respiratory, digestive or endocrine system diseases, liver and kidney diseases are also possible.

I am in poor health. Sometimes if I am too excited, I feel chest tightness, blackness in my eyes and fainting ... Hehe ... My symptoms have nothing to do with the weather. Anyway, I didn't feel right, so I ran to the balcony to take a deep breath and calm down. ...