Meteorological factors have a strong influence on allergic diseases
Pollen causes allergic diseases mainly because it contains allergens, and the release of pollen allergens is affected by a variety of factors, among which meteorological factors play an important role: annual temperature changes affect the flowering period of plants; daily temperature changes affect the amount of pollen dispersed in the atmosphere; the greater the air humidity, the lower the amount of pollen dispersed in the air; before the pollen dispersal season, frequent rain can lead to an increase in pollen concentration during the pollen dispersal season; wind, air pressure, and frost also have a greater impact on the change of pollen concentration ……
In addition, allergic diseases caused by pollen are also influenced by geographical factors. Because of the different plants and vegetation in different areas, there are different kinds of pollen drifting, and the pollen concentration also has a large difference.
There are 2 peak pollen seasons in a year
The pollen season of plants lasts from mid-March to early November every year, which lasts for about 8 months. In most areas of China, there are two peak periods of air pollen dispersion in a year: the first peak is in spring (February-May), when tree pollen is dominant; the second peak is in summer and autumn (July-November), when herbaceous pollen is dominant. Pollen is less allergenic in spring and more allergenic in summer and autumn. In China, pollen allergies are caused by the species of Artemisia, ragweed, grass and grass pollen in the north, and artemisia, grass and quinoa pollen in the south.
Pollen peak prevention 3 measures
During the peak of pollen dispersal, people who are allergic to pollen can do the following 3 things to reduce their contact with pollen and prevent the occurrence of allergic diseases caused by pollen.
1.Minimize going out, do not go to parks or fields with many flowers and trees, so that pollen inhalation is reduced to a minimum.
2. Take protective measures when you are outdoors, such as wearing sarongs and masks.
3, home life, you can close windows and doors, and when you need to open windows for ventilation, you can hang wet curtains to block or reduce pollen intrusion.
Different pollen concentration, different preventive measures
Spring pollen period (March-May)
The forecast value is less than 30 grains/1000 square millimeters, and the pollen concentration is low. People who are allergic to spring pollen can travel without worry.
The predicted value is 30-100 grains/1000 square millimeters, and the pollen concentration is high. People who are allergic to spring pollen should take appropriate protective measures when going out.
A predicted value of more than 100 grains/1000 square millimeters indicates a high pollen concentration. People who are allergic to spring pollen should avoid going out.
Summer and autumn pollen period (June – September)
The predicted value is less than 100 grains/1000 mm2, and the pollen concentration is low. People allergic to summer and autumn pollen should take extra care when going out.
The predicted value is 100-200 grains/1000 mm2, and the pollen concentration is high. People who are allergic to pollen in summer and autumn should take appropriate protective measures when going out.
The forecast value is 201-400 grains/1000 mm2, with high pollen concentration. People who are allergic to summer and autumn pollen should minimize going out, and those with severe allergies should avoid going out, and when they must go out, they should take active and effective protective measures.
A forecast value of more than 400 grains/1000 square millimeters indicates a very high pollen concentration. People who are allergic to pollen in summer and autumn should pay high attention to it regardless of the severity of the symptoms, and those who are severely allergic should avoid going out, and when they must go out, they should take active and effective protective measures.