Clinical efficacy of botulinum toxin type A injected by BellaVita in treatment of focal hyperhidrosis

Objective To explore the new way of administration and clinical effect of botulinum toxin A in the treatment of focal hyperhidrosis. Methods The clinical efficacy was observed in 132 sites of 28 patients with focal hyperhidrosis, and the degree and range of focal hyperhidrosis were determined by the minor iodine-starch test. 50 U of botulinum toxin A was injected in unilateral axillary, palms and soles with BellaVita instrument and 30 U for forehead. Each patient was followed-up in 1 week, 2 weeks and every month after injection for 8 months. According to the results of the minor iodine-starch test the objective effect and evaluation score were obtained, and the comprehensive effect evaluation score was calculated with the objective effect evaluation score and the subjective effect evaluation score in each follow-up. Results The comprehensive effect evaluation score before injection of botulinum toxin A was 1.34±3.94, and that after injection was 23.21±9.44 for 1 week, 92.41±11.95 for 1 month, 98.21±5.60 for 2 months, 95.98±5.94 for 3 months, and 86.61±10.17 for 4 months, respectively. Compared with that before injection, the difference was statistically significant (P 0.05). Based on the comprehensive effect evaluation scores, the difference of the clinical efficacy was not statistically significant between 1 week and 6 months after injection (P>0.05). Conclusions The clinical effect of botulinum toxin A injected by BellaVita is prompt and effective for focal hyperhidrosis. Key words: Hyperhidrosis; Botulinum toxin type A