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Background: Chronic spontaneous urticaria (CSU) is a common condition in adults, especially among women; this entity is frequently associ ated with autoimmune diseases. Our goal is to assess through laboratory studies whether patients with autoimmune CSU presented data. Material and method: A cross-sectional study of 35 patients was done in the area of Allergy and Immunology at Hospital Juarez de Mexico diagnosed with CSU. We performed the following tests: complete blood count, thyroid antibodies (antiperoxidase and thyroglobulin), antinuclear antibodies, rheumatoid factor, lupus anticoagulant, LE cells Autologous Serum Skin Test (ASST), add (C3 and C4). In addition, we made Helicobacter pylori test, thyroid hormones (T3, T4, TSH) and D-dimer. Results:We evaluated 35 adult patients, 27 female; ASST was positive in 4 patients, negative antinuclear antibodies in all cases, but positive anti thyroid (AAT) antibodies in 4. The LE cell, lupus anticoagulant, complement, dimer D, thyroid and Helicobacter pylori profile were normal or negative and rheumatoid factor was positive in one patient. All AAT-positive patients were women, but 26 of them had negative ASST. The correlation between ASST and AAT was not significant. Conclusion:Most patients were women UCE and only 4 had positive ASST, but this does not correlate with the presence of anti-thyroid antibodies. Most studies were normal, so we suggest not making unnecessary laboratory studies in this disease. [ABSTRACT FROM AUTHOR]

reactions to mosquito bites are unknown. Objective: To describe the adverse reactions to mosquito bites in school-age children of Monterrey, Nuevo Leon. Material and methods: A cross-sectional descriptive study was made via a randomized application of questionnaires to children from public elementary schools in the metropolitan area of Monterrey, Nuevo Leon. Results: A total of 11 public schools randomly selected were included in the study. One thousand questionnaires were submitted, of which 506 fulfilled the inclusion criteria; 55% were females. Seventy six percent referred adverse reactions to mosquito bites, being itching (75%) and rash (72%) the most frequent ones, in the last 12 months. Conclusions: Adverse reactions to mosquito bites occur frequently. Its early detection is important to establish a prompt treatment. [ABSTRACT FROM AUTHOR]