Comparative study of effectiveness of autologous serum and histaglobulin in autologous serum skin test positive and negative cases of chronic urticaria

Abstract

AIMS AND OBJECTIVES: The aim of our study is to compare the effectiveness of autologous serum therapy (AST) with histaglobulin in patients of chronic urticaria. MATERIALS AND METHODS: This was a prospective, comparative, randomized controlled, single-blinded study. Based on inclusion and exclusion criteria, patients were selected and divided into two groups by randomization. Autologous serum skin test was done in each patient irrespective of their groups. Group A (n = 30) received AST and Group B (n = 30) received histaglobulin. Patients' assessment was done every week for urticaria activity score (UAS) for 8 weeks. STATISTICAL ANALYSIS: We used Mann–Whitney test to compare the means between two groups. Wilcoxon signed-rank test was used to compare pre- and posttreatment UAS scores. RESULTS: Both therapies reduced UAS significantly (P = 0.01) at 8 weeks, and the reduction was observed every week. AST reduced UAS more than histaglobulin. However, within intergroup, difference was not significant. All patients had reduced severity of urticaria; however, complete remission (UAS = 0) was observed in three patients of Group A. CONCLUSION: Group A (AST) showed statistically significant improvement than Group B (histaglobulin), but both showed a reduction in UAS with a longer treatment-free interval.