Subcutaneous Autologous Serum Therapy in Chronic Spontaneous Urticaria

BACKGROUND There is a felt need for trying newer therapeutic modalities in patients with chronic spontaneous urticaria, especially in the subset of patients classified as non-responders to antihistamines. Autologous serum therapy is an upcoming modality of treatment, and we decided to study its efficacy by subcutaneous route. AIMS To evaluate the effectiveness of subcutaneous autologous serum therapy (AST) in CSU. METHODS This was a single blind, placebo-controlled parallel group, randomized, controlled study. Twenty-four patients with CSU (11M: 13 F) were given subcutaneous AST and seventeen patients (7 M: 10F) patients were given subcutaneous injection normal saline (placebo), along with levocetirizine in an on-demand basis in both groups. RESULTS Urticaria activity score (UAS) came down from 35.74 to 7 at the end of 9 weeks and the patients' requirement of antihistamines also reduced remarkably from 5.8 to 1.7 per week in the serum group. Sub-cutaneous saline group did not show statistically significant fall in UAS. Saline group showed UAS 32.8 at zero week to 22.1 at the end of 9 weeks. DLQI showed significant fall in serum group, from 14.26 to 4 at the end of 9 weeks. CONCLUSION Subcutaneous autoserum therapy is effective in treatment of CSU.