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There are many types of mites, but there are generally the following two categories:
1. Mites parasitic in the human body, mainly parasitic on hair follicles and sebaceous glands, the harm is mainly caused by rosacea, that is, the so-called mite acne, manifested in the seborrhea area, mainly the T-shaped area, erythema, papules, pustular-like lesions appear in the nose, nasal wings, and perioral parts, accompanied by itching and insect crawling, which affects the aesthetics; Mites can affect the conjunctiva, dry eyes, increased eye secretions, and eyelash loss after scratching, which is caused by mites parasitic on hair follicles and sebaceous glands;
2. In the living environment, such as sofas, carpets, mattresses, bedding, pillows, parasitic dust mites will lead to mite dermatitis and itching; Dust mites in the air can cause allergic asthma and allergic cough, which are all harmful to mites.
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After the patient is bitten by a mite, there will be an inflammatory reaction locally**, such as pimples accompanied by itching, and specific mites may cause blisters, eschars, etc. Some mites can also cause allergic diseases, such as eczema after exposure, nasal congestion, runny nose or asthma after inhalation. Some mites will parasitize in the human body, and after inhalation, the mites will parasitize in the bronchioles and lung parenchyma, and there will be pulmonary mite disease, respiratory symptoms such as cough and sputum production, and after eating, the mites will parasitize in the intestines, intestinal mite disease, abdominal pain, diarrhea and other digestive symptoms.
If an infant is exposed to dust mites, they will develop facial eczema, which appears as a red, edematous papule the size of a miliary grain, after which fluid may ooze and crust over. Adults often have eczema or become rough like lichen in delicate parts, such as the elbow fossa, axillary fossa and popliteal fossa.
If the patient is immunocompromised, has a severe systemic disease, severe diabetes, leukemia, or is on immunosuppressant drugs, after being attacked by scabies mites, Norway scabies may appear, which is manifested as eczema-like papules all over the body, and there may be extensive thick scabs, cracks, and hair may become dry.
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The most common mite diseases are:Ear mites, scabies mites and Demodex mites。Ear mites are a kind of mites parasitic in the ear canal, which often cause local itching, ear shaking, and brown discharge in the ear canal visible to the naked eye. Scabies mites live in the epidermis and can cause severe itching, with surface flushing, rash-like nodules, thickening, and crusting, usually due to frequent scratching and hair loss.
Demodex mites usually live in sebaceous glands and hair follicles. Generally, it is more common on the face, limbs and armpits, and the affected part is red, scattered in the red rash, pustules can be formed after infection, and there is more body odor. The above cases can be controlled by a combination of internal and external**, but Demodex is difficult**.
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Hello, a small area at the beginning of vitiligo may develop into a large area, and those that can be treated early may also be cured for a long time due to the delay of **, affecting the patient's communication, work and life.
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