منابع مشابه
Pigmentary Disorders
Many factors have been implicated for the etiology of melasma, but the exact cause of this hypermelanosis is poorly understood. However, it is considered to result from solar radiation and genetic predisposition. Moreover, pregnancy, oral contraception and hormone replacement therapy with natural and synthetic oestrogens, have been involved in the pathogenesis of this hypemelanosis. Despite the...
متن کاملPigmentary dispersion.
A long-term study of primary pigmentary dispersion has shown that the condition is commoner in males than females and appears most frequently in the third decade. After 10 years there may be a significant reduction in the amount of pigment deposited on the cornea, and the condition of several patients receiving treatment for glaucoma has remained under control when treatment has been stopped.
متن کاملGenetics of pigmentary disorders.
The genetic and molecular bases of various types of congenital pigmentary disorders have been classified in the past 10 years, as follows: (1) disorders of melanoblast migration in the embryo from the neural crest to the skin: piebaldism; Waardenburg syndrome 1-4 (WS1-WS4); dyschromatosis symmetrica hereditaria. (2) Disorders of melanosome formation in the melanocyte: Hermansky-Pudlak syndrome ...
متن کاملA Peculiar Pigmentary Condition
History.?In October 1910, the patient, Sepoy T. K., 27th Punjabis, showed me some pigmented spots on iiis face, hands and left leg. They first appeared in March, 1U0S, when the patient was living in Jhandola. He believed that quinine, which he was taking prophylactically at that time, caused their appearance. No fresh spots have appeared since then, but some of the original areas have increased...
متن کاملPigmentary Glaucoma with Retinochoroidal Pigmentation
Pigmentary glaucoma (PG) is considered as an entity within the spectrum of secondary open angle glaucomas. The condition usually starts in the third or fourth decades of life with disruption of the iris pigment epithelium. The released pigment granules deposit on anterior segment structures such as the corneal endothelium, trabecular meshwork and lens/zonules. This stage is known as primary pig...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Proceedings of the Royal Society of Medicine
سال: 1939
ISSN: 0035-9157
DOI: 10.1177/003591573903200509