“Sneeze!” In late summer and early autumn, the weather is refreshing and pleasant, but some people’s eyes and noses are extremely itchy, they sneeze continuously, and even have unstoppable tears and runny noses. Don’t mistake it for a cold; it could be autumn pollen allergies. China Weather Network has specially launched a national pollen allergy index map to see where people with allergies are most likely to be affected in the next three days.
Most of the central and eastern regions are susceptible to allergies
Inner Mongolia, Shanxi, Shandong and other places need to focus on protection
“From September 14th to 16th, most of the central and eastern parts of my country are in allergy-prone areas, and some areas in Inner Mongolia, Shanxi, Shandong and other places are extremely susceptible to allergies.” Wang Weiyue, a meteorological analyst at China Weather Network, said that the north is currently in a During the transition from summer to autumn, common pollen allergens at this time include grasses such as Artemisia, Trichosanthes, and Ragweed. The sunny and dry weather in the north is conducive to the spread of pollen from these grasses.
On the 14th, some areas in central and southern Inner Mongolia, western and southern Shanxi, southern Henan, eastern Shandong, most of Anhui, central Hunan, central and northern Jiangxi, northern Zhejiang, and southwestern Jiangsu had the highest allergy index, and they were all in extremely allergic areas. . Most of Northeast China, North China, Huanghuai, eastern Jianghuai, northern and eastern Jiangnan, western Jianghan, northern and southeastern Xinjiang, most of Qinghai, northwest Sichuan, Ningxia, and northern Shaanxi are also prone to allergic reactions. It is recommended that friends in the above-mentioned areas try to reduce the time they go out as much as possible, and those with allergies should prepare masks, hats and other protective equipment when traveling.
On the 15th, most of the central and eastern regions were still in allergy-prone areas, but the extremely allergy-prone areas have shrunk and are only found in parts of central and southern Inner Mongolia, western and northern Shanxi, eastern Shandong, and southern Zhejiang.
On the 16th, parts of Inner Mongolia, Shanxi, and Shandong continued to be sunny and dry, and the allergy index remained high. They are still highly allergic areas. Most of the central and eastern regions such as Hebei, Henan, Anhui, Jiangsu, and Zhejiang, as well as northern Xinjiang, Qinghai and other places are still prone to allergic reactions, so protection efforts must not be relaxed.
Herbs are more allergenic
People with allergies need to take precautions
Pollen allergy is a series of allergic reactions caused by inhaled pollen. Symptoms may occur in the nasal mucosa, conjunctiva, bronchus, skin and other parts of the body, with typical seasonal characteristics. However, not many plants bloom in late summer and early autumn, so why do pollen allergies occur like in spring?
In fact, the culprits of pollen allergies are not colorful flowers but trees and weeds. Pollen in autumn mainly comes from grasses such as Artemisia, Chenopodiaceae, Trichoderma, Ragweed, and Amaranthaceae. The pollen particles of these grasses are small and large in number. They are easily spread in the air and are highly allergenic.
As summer and autumn transition, the air gradually becomes drier, and sunny and windy weather conditions are also conducive to the spread of pollen. Wang Weiyue said that the spread of pollen depends on certain meteorological conditions. Generally speaking, rainfall can clean the air and reduce the concentration of pollen in the air. Wind is another key factor that affects pollen concentration. Generally, pollen spreads slowly in calm or breezy weather. When the wind is slightly stronger and the wind speed is stable, it is conducive to pollen dispersion, making the pollen concentration in the air relatively uniform; but the wind is too strong (Level 6). Above) or last for too long, it is easy to blow pollen to distant places quickly, causing the pollen amount in local areas to drop suddenly. In addition, pollen concentration is also affected by various factors such as weather phenomena, temperature, humidity, season and even plant growth cycle.
The most effective way to deal with autumn allergies is to avoid allergens as much as possible. China Weather Network recommends that sensitive people should avoid outdoor activities between 10:00 and 17:00 when pollen concentration is high. Wear a mask when going out in sunny and breezy weather, use lenses and glasses instead of contact lenses, and wash your mouth promptly after returning home. Nose, change clothes. If you are indoors, you can close doors and windows to reduce air flow, or use an air purifier to reduce indoor pollen concentration. Finally, when allergy symptoms are severe, be sure to seek medical attention promptly.