日射病是太阳輻射到地球上的红外线所引起的一种疾病。紅外线又叫“热射綫”,平常用肉眼看不见的因为物体吸收了紅外线以后,物体的热量就增加了。人身上的皮肤吸收了紅外綫,温度就增高。得这种病的人,大多数是夏天在烈日下工作的人,如建筑工人、搬运工人、测量工作者、农民以及行軍的士兵等。如果沒有很好的防热服装,照射到头上的大量紅外綫。就經过头髮、头皮、颅骨,到脑膜和脑的皮質。在正常的情况下,身体內的各器官包括脑子在內,只有在 Sunradiopathy is a disease caused by the infrared radiation that the sun radiates onto the earth. Infrared rays are also called “heat rays,” which are often invisible to the naked eye. Since the objects absorb infrared rays, the heat of the objects increases. The skin of a person absorbs infrared rays and the temperature increases. Most people who have this disease are people who work in the hot sun in the summer, such as construction workers, porters, surveyors, farmers, and marching soldiers. If there is no good heat-resistant clothing, a lot of infrared light shines on the head. It passes through the hair, scalp, skull, to the meninges and the brain’s cortex. Under normal circumstances, all organs in the body, including the brain, are only