[A woman with an itchy skin rash on her buttock].

A 24-year-old pregnant woman presented with a severely itchy skin rash on her left buttock after a journey to Thailand. The erythematous lesion appeared as 'cutaneous larva migrans', a skin disease in humans, caused by the larvae of various nematode parasites of the hookworm family (Ancylostomatidae). Due to her pregnancy, the patient was treated with local application of liquid nitrogen instead of oral anthelmintic therapy.

Fatty fish and supplements are the greatest modifiable contributors to the serum 25-hydroxyvitamin D concentration in a multiethnic population.

Objective: Because vitamin D synthesis is lower in a heavily pigmented skin than in a lighter skin, the relative contribution of determinants to the vitamin D concentration might differ between ethnic groups. The aim of this study was to assess the prevalence of vitamin D deficiency and the relative contribution of vitamin D consumption and exposure to sunlight to the vitamin D concentration in a multiethnic population.

Design: Cross-sectional study.