What Is The Skin Itchiness Caused By The Demodex Parasite?

Demodex is a parasite that can be found on healthy, normal human skin, when increasing in number can cause nonspecific clinical manifestations. Early diagnosis increases the effectiveness of treatment and saves money for patients.
General information about Demodex disease
Demodex was first described in 1841. Greek: called Demo: fat, dex: perforated worms (Worm-like morphology, in sebaceous region).
This is a parasite belonging to the family of mites, arthropods, has about 65 species, 23-100% of healthy adults have Demodex, transmitted by contact.
In people with common forehead cheeks, 2 sides of the nose, eyelashes cause itching.
Demodex Folliculorum: Long, parasitic in hair follicles, more shallow.
Demodex Brevis: Short type, parasitic in sebaceous glands, commonly found in the chest, back, deeper


Often many Demodex in the same hair follicle, head pin down
Demodex Folliculorum: the walls can be up to 440um long.
Demodex Brevis: maybe up to 140um.


What Is The Skin Itchiness Caused By The Demodex Parasite?

. Including head of tail body. 4 pairs of legs near the head. Life cycle: 14 - 24 days.
Demodex brighten.
Demodex image under a microscope
PURPOSE AND PRINCIPLES:
Purpose:
Identify the morphology of Demodex species causing skin diseases

Principles:
Under the effect of soft and thin horn epithelial vegetable oil thus reveals Demodex morphology
Performance by:
Performers: Laboratory technicians have been trained and have a certificate in specialty of parasites.
Persons who evaluate and approve the results: Head of department, deputy head or officer with university or higher degree in the field of testing.
Preparing instruments
Equipment:
Optical microscope
Biological safety cabinets 2
Tools, chemicals and consumables
Glass slide, Glass leaf, Knife handle, scalpel no.10, Vegetable oil, Panh, Sample tray, Glass writing pen.


What Is The Skin Itchiness Caused By The Demodex Parasite?

.
Specimens: Specimens such as skin scales, sebum.
Test slips: Fill in all information according to the request form.
STEPS PROCESSED:
Collect specimens:
Using a blunt knife perpendicular to the surface of the skin and parallel to the slide, then scrape the skin at the indicated location
Shave deeper than shaving
Usually taken positions: Face, head, back, chest, groin.
Technical process: Focus the specimen on the slide
Put 1 drop of vegetable oil on the slide, then cover the lamen, gently press to gradually absorb the specimen and spread evenly
If the sample is pulp dissolved in 1 to 2 drops of vegetable oil and read the results after a few minutes.
Time: 5 to 7 minutes and read the results after 1 to 2 hours.
RECOMMENDED RESULTS:
For mature Demodex, the body is divided into 3 distinct parts: Head, chest and tail. They only distinguish differently in the tail (D. folliculorum long tail, D. short tail B.


What Is The Skin Itchiness Caused By The Demodex Parasite?

. brevis). And the head and chest are similar
Dermatitis caused by Demodex
Count the number of demodex / slides
If the concentration of Demodex is ≥ 5 heads / field with a low magnification microscope (objective 4 or 10): Demodex is a pathogen.
If the concentration of Demodex is <5 heads / field with a low magnification microscope (objective 4 or 10): Demodex is not necessarily a pathogen. FINDINGS AND TREATMENT: Errors: Collect specimens at atypical lesions Samples mixed with sebum and skin scales The specimen is too thick or too thin No samples were collected in the deep Patients apply antiparasitic drugs To solve: Select areas of itchy or damaged skin Use the index finger to spread the thin piece Shave a little deeper than shaving mushrooms Patients should not apply antiparasitic drugs before 3 to 5 days. How can I prevent Demodex infection? Step 1: Keep skin always clean, do not let the amount of mucus on the skin too much and in too hot and humid environment. Without food, without a suitable habitat, Demodex would not automatically survive. Step 2: Actively keep your house, blankets, sun pillows clean, etc. Step 3: Do not use products that are not quality tested, of unknown origin, mixed creams, peeling lotions, alcohol, etc. Step 4: Always strengthen the body's resistance such as supplementing with vitamins, minerals, nutrients, .

What Is The Skin Itchiness Caused By The Demodex Parasite?

..
How to treat if infected?
To treat Demodex, you must first coordinate with the prevention of Demodex infection to avoid re-infection during treatment, you must perform all 4 steps above.
Wash your face 2 times daily with soapless detergent. Avoid oily cleansers and oily makeup. Exfoliates periodically to remove dead skin cells.
Medication: Metronidazole should be combined with topical and oral: and remember that a doctor's prescription is required to control the dosage and side effects.
Demodex killers: apply Metrogyl ointment twice daily or 10% and 25% Benzyl benzoate solution
Horn plugs in pores like: A. Salicylic or VitaminA acid.


What Is The Skin Itchiness Caused By The Demodex Parasite?

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If you need to take extra medicine, you need to retest Demodex to what extent, in order to answer your question. Please come to Anh Nga Parasitic Specialist Clinic for advice on testing and treatment according to an appropriate regimen.
KTV. Ngoc Hanh.

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