Recently, the weather has been hot and the news on heat stroke has been reported frequently. It is important to learn some first-aid methods for heatstroke. Heatstroke is a group of syndromes that occur when the regulation function of body temperature fails in a high temperature environment. Under conditions of high heat, high humidity, and low wind speed, the body's ability to regulate body temperature will be out of control, which can easily lead to a series of uncomfortable reactions, causing heat stroke.

Threatened heat stroke and mild heat stroke are more common in daily life. Threatened heatstroke manifests as dizziness, vertigo, tinnitus, nausea, vomiting, chest tightness, palpitations, thirst, profuse sweating, and inattention, but the body temperature does not exceed 37.5°C.

Mild heat stroke is manifested by flushing or pale complexion, shortness of breath, profuse sweating, burning or clammy skin, increased heart rate, and weak pulse. Heat stroke can be divided into mild and severe heat stroke. Mild heatstroke manifests as dizziness, headache, flushing, thirst, profuse sweating, general weakness, palpitations, rapid pulse, inattention, and uncoordinated movements.

Severe heat stroke could be divided into heat cramps, heat exhaustion and thermoplegia. The main manifestation of heat cramps is muscle pain or twitching. Patients with heat cramps could sit in a cool place to rest and drink some fruit juice or sports drinks. If the patient has a history of heart disease or the heat cramps have not relieved after 1 hour, he or she should seek medical treatment immediately. The onset of heat exhaustion is rapid. Patients often experience dizziness, vomiting, cramps, fainting and other symptoms. To ease these symptoms, they should drink cool and non-alcoholic beverages, take a cold bath or wipe the body, turn on the air conditioner; and change into light clothes. If the symptoms are severe, accompanied by heart disease or high blood pressure, you should seek medical assistance immediately. The manifestations of thermoplegia are diverse, such as dizziness, nausea, extremely high body temperature (oral body temperature greater than 39.5 degrees Celsius), red and hot skin, dry and non-sweating, and weak cold resistance. The patient should move to a cool place, and quickly cool down by wiping the body with cold water. It is not necessary for patient to drink a lot of water, but take a small amount of sugar and salt water could be proper. It is recommended to dial 120 immediately.