DEMODEKS

DEMODEKS, yak nav kana. Dar follikulahoi muyi odam va pashmi hayvonot zindagi mekunad; onro dar gadudhoi ravgan niz paydo kardan mumkin ast. Rangash safedcha, daroziash 0,15 – 0,48 mm. Gizoi D. hujayrahoi follikulahoi muy, mavodi kosmetikie, ki ba pust molida meshavand, hamchunin muhtavoi gadudhoi ravgan meboshand. D. metavonad az masomai follikulaho guzashta, endoplazmaro niz chun gizo istifoda kunad.
D. du namud meshavad: Demodex folliculorum va D. brevis. Avvali kanai nisbatan daroztar buda, dar follikulahoi muy joygir meshavad. Digari kanai khurd buda, dar gadudhoi ravgani odamu hayvonot zindagi mekunad. D. folliculorum moddahoi gizoii reshai muyro jabbida megirad. Dar natija follikulahoi muy iltihob yofta varam mekunand, muy merezad, pust surkh shuda, qabathoi poyonii on zarar mebinand.
D. bo bisyor bakteriyahoi bemoriovar tamos dorad. On shabona az khaltachahoi muy ba sathi pust baromada, hangomi dubora ba joi zist bargashtan, bo khud miqdori ziyodi bakteriyahoi zararnokro megirad. Dar natija gadudhoi ravgan iltihob paydo mekunand, pust betarovat shuda, narak va yarachahoi gunogun mebaroyand; bazan joyhoi osebyoftai pust khorish mekunand, ehsosi murchadavak ba vujud meoyad. Dar barobari in ikhroji D. ba mubodilai moddaho dar organizm tasiri manfi merasonad.
D. berun az organizmi homil zud mahv meshavad. Dar surati vujud doshtani sharoiti musoid qobiliyati hayotii on mahfuz memonad, mas., dar obi haror. 14 – 15°S to 25 ruz, dar boqimondahoi mavtshudai pust va zardob 15 – 20 ruz. Muhiti az hama sozgor baroi afzoishi D. ravgani rastani, charbu, vazelin meboshand (onho dar tarkibi vasoiti pardoz vujud dorand).
D.-ro dar 97%-i odamoni kalonsol metavon paydo kard. Vale bisyor odamon hatto ehsos namekunand, ki dar jismi onho kana mavjud ast. Zero dar yak gadud joy giriftani 2 – 3 kana ba vazi pust chandon tasir namerasonad.
Davri inkishofi D. az tukhm, kirmina, protonema, zocha va fardi bolig iborat buda, 14 – 20 shaboruzro darbar megirad. Az tukhm badi 60 soat kirmina mebaroyad. On badi 72 soat ba zocha tabdil meyobad. Davri inkishofi zochai D. 60 soat ast.