2023-04-23 03:55:55
Picture, Text/Health Medical Network
The skin on the face was red, swollen and rough, as if it could be polished with sandpaper! Zhou Wanyi, director of a well-known dermatology clinic, said that Demodex mites are common commensal parasites found on most people’s faces. When the number of insects exceeds the standard, it is easy to make the patient’s face itchy, enlarged pores, and induce papules and pustules. Sensitivity, which leads to redness, bloodshot and uneven skin tone. In severe cases, the facial skin may even feel rough like sandpaper.
(Photo/Health Medical Network)
Common symbiotic parasites on the face, bacteria and feces can easily cause allergies
What are Demodex mites? Zhou Wanyi pointed out that Demodex mites are common symbiotic parasites on most people’s faces. They like to live in pores, scalp and other parts that are prone to oil. They are invisible to the naked eye and need to be seen with a microscope. Its exoskeleton contains chitin and has bacterial yeast on its surface. Demodex mites have sharp mouthparts, which can eat human keratinocytes and oil, and cause skin damage when crawling on their feet.
▲The bacteria and feces after the death of Demodex mites can cause allergic reactions. (Provided by Dr. Zhou Wanyi)
Zhou Wanyi described that Demodex mites are divided into two types: Demodex folliculorum and Demodex brevis, which are a kind of insect that “only enters and cannot exit”. When Demodex dies, the chitin in the body and the bacteria in the stomach , Feces are released, which may cause allergic reactions.
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Demodex folliculorum: The tail is blunt like a finger, and it will eat hair follicle epidermal cells, sebum and facial fat. The eggs are arrow-shaped.
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Demodex brevis: The tail is pointed like a cone, and it will eat sebum and face fat. Eggs are oval in shape.
9 major symptoms of skin inflammation and vascular hyperplasia Demodex mites exceed the standard
Zhou Wanyi said that when Demodex mites exceed the standard on our face, it will not only easily lead to skin inflammation, but also may cause blood vessel proliferation.Clinical experience most caught
▲The bacteria and feces after the death of Demodex mites can cause allergic reactions. (Provided by Dr. Zhou Wanyi)
How to find Demodex mites? Comparison of 4 detection methods
How to check whether the Demodex mites on the face exceed the standard? Zhou Wanyi explained that Demodex mites cannot be seen with the naked eye. It needs to be detected by “Demodex”, which is the so-called “Insect Inspection”. If more than 10 pieces are produced, it will exceed the standard. If it is pasted with quick-drying glue, if more than 5 pieces are caught, it will be exceeded. The most difficult point before treatment is whether you can “confirm the diagnosis”. The key is to confirm the predisposing factors of the patient.
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Thumb Squeeze Method: Higher accuracy, the largest number of insects can be sampled, and the type of insects can also be distinguished. It takes about 30 seconds to 1 minute to complete. Sampling may cause pain and indentation.
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Quick-drying glue sticking method: the operation is quick, convenient and painless, and the opening state of hair follicles can be observed.
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Pustule picking and scraping method: it can be known whether the pustule content is demodex, bacteria or speaking bacteria (the distinction between the latter two needs to be confirmed by further staining)
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Dermoscopic observation method: fast, convenient and painless, but requires a higher magnification dermatoscope, has limited features and is difficult to see, and has low accuracy.
“There are worms on my face” sounds scary at first! However, Zhou Wanyi explained that in fact, Demodex mites are common symbiotic parasites on the face, and there is no need to kill them all. In case the number of insects exceeds the standard, use anti-Demodex ointment, which can also avoid the development of drug resistance, and one ointment can be used for about In one and a half months, the skin condition can improve rapidly.
Demodex mites exceeded 100 after 20 years of long-term resistance to rose spot
48-year-old Ms. Lin has been fighting acne for 34 years. When she was young, due to long-term use of skin care products with poor ingredients and alcohol, her skin was severely reddened, swollen, tingling, and itchy. He even endured strange eyes and went to the venereal disease clinic for help. Therefore, she only dared to go out after the sun went down all the year round, and the jobs she found were all night shifts.
Later, after a diagnosis, Ms. Lin was diagnosed with rosette, and the number of Demodex mites on her face exceeded the standard by more than 100! Under the doctor’s advice, start killing insects, change your eating habits, go out with full sun protection, and don’t drink irritating drinks. After about 2 months of treatment, the facial condition began to improve, the redness gradually faded, and the skin returned to fairness. You don’t have to worry about going out strange eyes.
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