There are a lot of mosquitoes in summer. Sometimes the bites just show a red dot, and sometimes they swell up greatly.
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It is said that the bigger the mosquito bag, the more toxic it is. Is this true?
There are two types of effects of mosquitoes on people.
The first is to suck blood, which is less harmful.
After being bitten by mosquitoes, many people will experience local skin allergies, redness, swelling, pain, and unbearable itching. After scratching, the skin will also develop ulcers and infections and other serious conditions.
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The second type is the spread of deadly diseases, which is very lethal.
Mosquitoes top the list of the 15 most deadly animals to humans, injuring more people each year than all other animals on the list combined.
There are three genera of mosquitoes that are closely related to human health, namely Culex (house mosquitoes), Anopheles (Anopheles) and Aedes (Aedes). These three genera are common in various parts of my country. There are dozens of kinds.
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When mosquitoes suck human blood, different types of mosquitoes can cause different diseases and clinical characteristics.
Usually Anopheles mosquitoes mainly spread malaria, and the clinical characteristics will be body fever, sweating and intermittent shivering;
Culex mosquito spreads Japanese encephalitis through biting humans. , the clinical characteristics are unconsciousness and high body temperature;
Aedes mosquito sucks human blood and can spread a variety of diseases , such as dengue fever , yellow fever and chikungunya and other major transmission media. Aedes mosquitoes.
After being bitten by a mosquito, the size of the mosquito bag on the body is closely related to the strength of the individual's immune system and has nothing to do with the mosquito's toxicity.
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People with strong immune systems can escape unscathed after being bitten, but most people will have physical reactions, mild manifestations of raised mosquito bites, and obvious itching and skin lesions. Symptoms include erythema, papules , and wheals .
For people with weak immune systems, especially those with sensitive constitutions, after being sucked blood, a large amount of histamine and cytokines will be released, followed by blisters, plaques, and congestion. Spots, swelling and pain, etc. If the symptoms react violently, it will take a long time to be completely relieved.
In addition, scratching with hands will increase the release of the organic nitrogen-containing compound histamine, which may cause tissue damage or inflammation, leading to local tissue edema.
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Therefore, when you feel itching, you can apply mint ointment, toilet water to relieve it in time, instead of scratching.
Source | "Family Medicine" Issue 15, August 2022
Editor | Zhang Wanbo
Proofreading | Zheng Ke
Second review | Zhou You
Final review | Liu Huiying Zhang Ruxian
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