When is it cold in spring? What months are cold in late spring?

Late spring cold is a common phenomenon before we enter spring. Many people wonder, when is the cold spring? When is it cold in spring? What months are cold in late spring? Let me answer them for you one by one!

When is the "late spring cold"? The meteorological index is that the daily average temperature is lower than 12℃ for 3-5 consecutive days, usually in February-March. When the temperature drops sharply, it can be judged that there is "late spring cold" in this area. During the cold period in late spring, it has a great influence on the elderly and children with weak resistance. This kind of weather can easily lead to acute attacks of colds, asthma and bronchitis. Therefore, the elderly and children should pay attention to spring covering and add clothes in time to resist the cold.

Generally speaking, late spring cold refers to the weather phenomenon that the temperature rises rapidly in early spring (generally refers to the end of February and the beginning of March) and the temperature in late spring cold (generally refers to April) is lower than normal.

The harm of late spring cold to health may lead to cardiovascular and cerebrovascular diseases.

The phenomenon of "late spring cold" may cause cardiovascular and cerebrovascular diseases in the elderly. The elderly have poor heat balance ability, and the circulatory system is easily stimulated by "late spring cold". After the sudden drop of temperature in spring, the sympathetic nerves of the elderly are stimulated by cold, and their excitability is enhanced. The capillaries on the skin surface of the whole body contract, which increases the blood flow resistance and leads to an increase in blood pressure. Because the elderly and patients with cardiovascular and cerebrovascular diseases can't adapt to this change, there may be a sudden increase in blood pressure, cerebral infarction, cerebral hemorrhage or myocardial infarction. In addition, sudden weather changes will cause changes in the earth's magnetic field and induce autonomic nervous dysfunction.

May induce rheumatoid arthritis.

In early spring, some young ladies who love beauty put on skirts early. However, women's knee joints are sensitive to cold air stimulation. After being attacked by cold air, joints are prone to symptoms such as numbness and soreness. Over time, rheumatoid arthritis is prone to occur. A survey report shows that women in Tunisia like to wear skirts all year round, even in the cold winter. As a result, 70% of women in Tunisia suffer from rheumatoid arthritis.

May cause respiratory diseases.

Due to the cold climate and dry air in early spring, the defense function of respiratory mucosa will be directly affected after the sudden change of temperature in late spring, and pathogenic microorganisms such as bacteria and viruses can take advantage of it, leading to the epidemic of infectious diseases such as influenza and mumps. In winter and spring alternate seasons, the incidence of respiratory infectious diseases such as measles, diphtheria, whooping cough, scarlet fever and tracheitis is much higher than other seasons.