The speed of movement of demodex on the skin - 8-16 mm / hour. It feeds on sebum.
ticks stops outside the host. At t ° + 30 °, + 40 °, they
show maximum activity and, therefore, often worsening demodectic
It occurs in the spring and summer, in the period of maximum temperature,
after taking a hot bath, a long stay in the hot room
etc. For a long time ticks live in a vegetable oil, petrolatum,
cosmetic cream. Tar, kreazol, carbolic acid, chloroform,
Live kill them instantly, 96 ° alcohol - in 3-4 minutes, 10 °
alcoholic solution of salicylic acid - 1 minute.
What causes demodectic
Demodex genus are found in 60% of adults, but the disease
It does not arise at all. Men and women are equally common demodekoz
often. It is considered normal number of ticks 0-1, sickness -
3-4 tick more 6 eyelashes.
As a result, long-term
co-existence between mites and host develops
stable equilibrium (carrier) in which the effects of the parasite
balanced by a healthy immune mechanisms carrier host. Under
the influence of various factors, the equilibrium is disturbed and there
manifestations of demodectic mange. The external factors provoking occurrence
demodectic mange include: exposure to high temperatures, solar
exposure, adverse conditions for household and professional use, operation
on the eyeball. The internal factors contributing to the emergence of
demodectic mange include changes in the patient's organism immunity
result of diseases of the nervous, cardiovascular and hormonal (eg,
diabetes) systems, gastrointestinal and liver disorders
in metabolic processes, reduce immunity.
What are the symptoms of demodicosis
skin appears redness of the skin, the surface extension
vessels, small bubbles, peeling. Patients complain
eye fatigue, itchy eyelids and eyebrows, worse heat,
tingling, burning, foreign body sensation or sand in the eyes,
"Pins and needles", severity and age of viscous sticky, "corrosive" for discharge
morning, the accumulation of foamy discharge in the corners of the eyes during the day.
Age is accompanied by dysfunction of the glands of the eyelids, skin peeling eyelids
(Scales and crusts grayish between the lashes). The skin edges of the eyelids
slightly reddened, mouth glands on the eyelids expanded, pressure-sensitive and
massage age of them is thick or slivko- or medoobraznoe
discharge. Noticeable small pustules on the free edge of the eyelids and
multiple papillary formation on the skin between the lashes. at
demodicosis age may be meager, often frothy, mucous discharge
eyes. As a result of violations of the century glands function decreases layer
tear film, its evaporation is enhanced, leading to the syndrome of "dry eyes".
How is the diagnosis of demodectic
Diagnosis of demodicosis
made eye doctor. Laboratory diagnosis of demodectic
the eye is very simple, does not require special preparation, it is possible to
the presence of the patient in the doctor's office, carried out by identifying
ticks on remote eyelashes (eyelash should be svezheudalennoy).
Sveeeudalennuyu eyelash for research is placed on a glass slide,
Pour 10-20% solution of caustic alkali, gasoline, kerosene or
glycerol coated glass slide and examined under
How is the treatment of demodectic mange
demodectic long, 4-6 weeks. For the treatment of demodectic mange apply
protivokleschevye preparations 1-2% yellow mercury ointment and tsinkihtiolovaya
ointment. Use of yellow mercury ointments due to toxicity
more than 4 weeks, it is contraindicated in pregnancy. For skin
drugs used sulfur, tar, ichthyol, benzyl benzoate, 1%
permethrin, amitrazol, lindane 1%, 10% crotamiton (Yuraks). when treating
demodectic eyes are also used agents used for the treatment of glaucoma:
physostigmine phosphacol 0.02%, 0.01% Armin, 0.5% tosmilen. They paralyze
muscle ticks. Lubrication edges of the eyelids 4% pilocarpine gel or
processing of thin bannichkom dipped 1.5-3% solution karbohola
also paralyzes the muscles of the jaws.
Good results are obtained with an ointment or gel 2% metronidazole (Clione, Metrogil).
Ointments with hormones (eg, eye hydrocortisone) reduce local immunity and lead to an increase in the number of ticks.
Auxiliary treatment of demodectic mange include: artificial tear formulations with the syndrome of "dry" eyes,
processing edges of the eyelids Dimexidum solution, aqueous infusion of tansy,
alcohol tincture of wormwood, massage eyelids with disturbance of function of glands century,
D'Arsonval, magnetic therapy, electrophoresis forever with diphenhydramine, zinc
sulfate, calcium chloride, 2%, 3% potassium iodide.
importance is holding therapy of opportunistic diseases
gastrointestinal tract and liver, and the correction of immunological
metabolic disorders, treatment of chronic infection foci, treatment of seborrhea, the optical correction of vision.
the main course of demodectic mange treatment is recommended rubbing burdock
oil in the lid margin of 1.5-3 months to stimulate eyelash growth.
What is the prognosis of demodicosis
demodectic remission lasts from 3 months to a year, depending on the type
skin, age, presence of concomitant diseases of internal organs. In
10% of treated patients the relapse, often due to incomplete course