Analysis of filaggrin 2 gene polymorphisms in patients with atopic dermatitis.

Background: Polymorphisms of the filaggrin 2 gene (rs 12568784 and rs 16899374) are associated with persistent atopic dermatitis in African American patients. Filaggrin 2 is a protein with a function similar to filaggrin and also encoded in the epidermal differentiation complex on chromosome 1q21.

Objective: To evaluate the polymorphisms in the filaggrin 2 gene (rs 12568784 and rs 16899374) in children and adults with atopic dermatitis and to verify the association of these with the severity of the clinical picture, presence of other allergic diseases, and socio-demographic factors.

Clinical and epidemiological characteristics of childhood vitiligo: a study of 701 patients from Brazil.

Background: Vitiligo is an acquired pigmentary disorder that affects approximately 0.5-2% of the world's population, and 25% of cases begin before 10 years of age. Although prevalent, there are few studies on the characterization of childhood vitiligo.

Case for diagnosis. Acrokeratoelastoidosis.

Acrokeratoelastoidosis is a type of palmoplantar keratoderma first described by Oswaldo Gonçalves Costa, a Brazilian Dermatologist from the state of Minas Gerais. It is a rare autosomal-dominant genodermatosis; however it may occur sporadically. The disease is not congenital; rather, its onset occurs in childhood or adolescence.