[Aetiology of childhood alopecia].

Introduction: Childhood alopecia is a relative rare event in general paediatric dermatology practice. Hair loss in children may have multiple causes, and there are different types of alopecia according to age groups. The aim of the study was to describe the clinical and epidemiological profile of alopecia in children from two Chilean paediatric hospitals.

[Body distribution and density of acquired melanocytic nevi in adolescents of low socioeconomic status of Santiago, Chile].

Background: There is an increase in the incidence of malignant melanoma in Chile. Previous studies have shown that the density and size of acquired melanocytic nevi (AMN) are a risk factor for developing malignant melanoma.

Aim: To assess the number and anatomical distribution of acquired melanocytic nevi in Chilean adolescents.

[Frequency of celiac disease among patients with psoriasis].

Background: A possible relationship has been reported between psoriasis and celiac disease, with common pathogenic mechanisms that may need further investigation.

Aim: To investigate the presence of clinical and serological markers for celiac disease in a group of Chilean psoriatic patients.

Material And Methods: We included 80 psoriatic patients (42 males) aged 16 to 79 years, whose serum was tested for antitransglutaminase antibodies (ATGA) and antiendomysial antibodies (AEMA).