[IgA deficiency] / Deficiência de IgA.

OBJECTIVE: The studies about immunoglobulin A (IgA) deficiencyin the clinical, laboratorial and terapeutic aspects. METHODS: Bibliografic review of the last ten years about thesubject by Medline system and direct research. RESULTS AND CONCLUSIONS: IgA deficiency is the most frequent primary immunodeficiency, with the average prevalence of 1:700and must be studied in its clinical, laboratorial and terapeutic aspectsby pediatrician and other specialists. The clinical characteristics ofthe total and partial immunodeficiency must be known, so as thecomplications and laboratory techniques for determine accurate diagnosis and prognostic.

[Abnormal sweat test in patient with Diabetes Insipidus unresponsive to ADH]. / Teste do suor anormal em paciente com Diabetes Insipidus resistente ao hormônio antidiurético.

Increased sweat concentrations (92, 76 and 80 mEq/l) were observed in a 7-year-old boy with pitressin-resistant diabetes insipidus. All previous observations of elevated sweat electrolytes in diabetes insipidus have been in infants less than 10 months of age. The sweat test is an exceptionally reliable, sensitive and specific test for the diagnosis of Cystic Fibrosis. Pitressin-resistant diabetes insipidus is one of the diseases associated with elevated sweat test results.