Bardet-Biedl syndrome (BBS) is a rare autosomal recessive disorder with clinical and genetic heterogeneity. This syndrome was first described by Laurence and Moon in 1866 and additional cases were described by Bardet and Biedl between 1920 and 1922. The main features are obesity, polydactyly, pigmentary retinopathy, learning disabilities, various degrees of intellectual impairment, hypogonadism...

Laugier-Hunziker syndrome is a rare, hereditary pigmentary disorder characterized by mucocutaneous lentiginous lesions and melanonychia. The condition regarded as benign since underlying malignancies or systemic disorders were not reported. Since various malignancy syndromes including Peutz-Jeghers Cronkhite-Canada cause of hyperpigmentation such Addison disease drugs are presented with similar...

Dowling-Degos disease (DDD) is a rare autosomal dominant inherited pigmentary disorder of the flexures with a reticulate aspect and with presence of prominent comedone-like lesions and pitted scars. The diagnosis includes acanthosis nigricans as well as other reticulate pigmentary disorders classified into: dyschromatrosis symmetrica hereditaria (DSH), dyschromatosis universalis hereditaria (DU...

Background: Vitiligo is a pigmentary disorder of the skin, which has been reported in association with thyroid disorders. Objective: The aim of this study was to assess thyroid disorders in vitiligo patients. Patients and Methods: In this case-control study, thyroid function tests were evaluated in seventy patients with vitiligo and compared with a control group. Results: Nine of seventy patien...

OBJECTIVE Griscelli syndrome (GS) is a rare autosomal recessive immune deficiency disorder that presents with pigmentary dilution of the skin and hair, recurrent skin and pulmonary infections, neurologic problems, hypogammaglobulinemia, and variable cellular immunodeficiency. Three mutations have been described in different phenotypes of the disease. In most of cases, GS leads to death in the f...

Pigmentary variation in animals has been studied because of its application in genetics, evolution, and developmental biology. The large number of known color loci provides rich resource to elucidate the functional pigmentary system. Nonetheless, more color loci remain to be identified. In our previous study, we revealed that two different strains, namely, AGH rats and LEH rats, but which had t...

Piebaldism is an autosomal dominant uncommon (<1 in 20,000) congenital pigmentary disorder. Depigmented patches are present since birth. They usually remain unchanged throughout life. Vitiligo is its closest differential diagnosis. We report a unique family in which these two dissimilar depigmentations, i.e. piebaldism and vitiligo (with nevus depigmentosus), were noted in two brothers. T...

Dowling-Degos disease is a rare autosomal dominant inherited pigmentary disorder characterized by reticulate pigmentation of the flexures, prominent comedone like lesions and pitted scars. Dyschromatosis universalis hereditaria is characterized by the presence of hypopigmented as well as hyperpigmented macules. We report a family showing features of both these diseases.

“Dermatitis, eczematous, and allergic disorders, followed by skin infections and infestations, and pigmentary disorders are the commonest skin disorder groups. Contact dermatitis (allergic and irritant), followed by hyper pigmentations, acne, viral infections, atopic dermatitis, and parasitic infestations topped the list of the most prevalent skin disorders”. Leishmaniasis is the most prevalent...