cockayne syndrome is a very rare genetic disorder with a recessive autosomal mode of inheritance characterized by dwarfism, microcephaly, mental retardation, deafness, photosensive dermatitis and a peculiar form of retinal pigmentation. we report an iranian family with one affected child who suffers from cockayne syndrome. cardinal features are failure to thrive, short stature, premature aging,...

Background: Axillary hyperpigmentation is a common and troublesome complaint especially among dark-skinned women. It believed to be form of post-inflammatory so far, there no universally accepted treatment for the disorder. Objective: The aim this study assess efficacy fractional CO2 laser in axillary Patients methods: Thirty Egyptian females with were recruited. severity condition was estimate...

The incidence of malignant melanoma in developed countries has been rising rapidly in recent years. Its causes and the reasons for this trend are uncertain. Changes in histopathological criteria for classifying pigmented skin lesions could explain the rising incidence rates. With support from the International Agency for Research on Cancer, this hypothesis is explored but not substantiated for ...

Skin and hair pigmentation are two of the most easily visible examples of human phenotypic variation. Selection-based explanations for pigmentation variation in humans have focused on the relationship between melanin and ultraviolet radiation, which is largely dependent on latitude. In this study, skin and hair pigmentation were measured as the melanin (M) index, using narrow-band reflectance s...

Ocular pigmentation in white cats with blue and yellow eyes and in Siamese cats was examined ophthalmoscopically and histologically. Yellow-eyed white cats had entirely normal ocular pigmentation. Blue eyes of white cats had normal pigmentation of the iridial and retinal pigment epithelia but no stromal pigmentation of the iris or choroid. This deficit is apparently due to the absence of stroma...