LEYKODERMA

LEYKODERMA (Leucoderma; az lekyko… va derma), safedpusti, khalal yoftani rangi pust binobar dar on kam yo tamoman nest shudani pigmenti melanin. Dar mavridi L. dar pust paysa (dog)-hoi andozaashon gunogun ba vujud meoyand (rangi onho nisbat ba rangi pusti solim safedcha ast). Sababi L. bemorihoi iltihobii pust, ikhtiloli asab, khalal yoftani faoliyati gadudhoi dokhili va g. meboshand.
L. haqiqi (kasbi, dorui, sifilisi) va durugin meshavad. L.-i durugin dar joi izi zakhm, mas., psoriaz, shukufa va g. boqi memonad. L.-i kasbi binobar tasiri moddahoi khimiyavi, ki pigmenti melaninro vayron mekunand, ba vujud meoyad. On asosan dar odamone, ki bo moddahoi khimiyavi (mas., hosilahoi gidrokhinon) saru kor dorand yo bo dastpushaki rezini kor mekunand, ba mushohida merasad. L.-i dorui mumkin ast dar surati muddati madid istifoda burdani furasillin inkishof yobad. L.-i sifilisi alomati sifilisi duyumini residivi buda, daleli oseb yoftani sistemai asab ast. Beshtar dar zanho ba mushohida merasad (asosan dar gardan paydo meshavad). L. hamchunin shabakavi (dogho ba hamdigar omezish yofta, misli shabaka – tur megardand) va marmari (dar atrofi doghoi safed nuqta-nuqta rangi pusti solim boqi memonad) meshavad.
Baroi muolija sababi L.-ro raf sokhtan lozim ast. L.-i sifilisi muolijai makhsus mekhohad (nig. Sifilis). Farjomi marizi khub ast.