title: A double-blind, randomized, comparative study of two type A botulinum toxins in the treatment of primary axillary hyperhidrosis.
abstract: BACKGROUND
  Botulinum toxin (BTX) is an effective treatment for primary axillary hyperhidrosis. In this study we used two toxins not bioequivalent: BOTOX (Allergan, Inc.) and Dysport (Beaufour Ipsen Biotech).
  
  
  OBJECTIVE
  The objective was to compare the efficacy, safety, and tolerability of BOTOX and Dysport in the treatment of primary axillary hyperhidrosis using a conversion factor of 1:3, respectively.
  
  
  METHODS
  In a double-blind, randomized prospective study, 10 patients with primary axillary hyperhidrosis and sweat production exceeding 50 mg/minute received 50 U of BOTOX in one axilla and 150 U of Dysport in the other. We performed Minor's test and gravimetry at 0 days, at 15 days, and monthly for 1 year.
  
  
  RESULTS
  No significant difference was observed in the sweating quantity at baseline. After 1 month all patients had achieved success for both axillae. The sweat rate was reduced by a mean of 97.7% for BOTOX and 99.4% for Dysport, without statistical difference. The duration of benefits was similar between both toxins, with a mean of 260 days for BOTOX and 290 days for Dysport, without statistical difference. The longest symptom-free interval was 12 months (5 patients, 55.6%).
  
  
  CONCLUSIONS
  BOTOX and Dysport presented similar levels of safety and efficacy in the treatment of primary axillary hyperhidrosis when a conversion factor of 1:3 was used.
authors.affiliation: Department of Dermatology, Universidade Federal de São Paulo-UNIFESP, Hospital São Paulo, São Paulo, Brazil. talarico@cedermatalarico.com.br
authors.forename: Sérgio
authors.initials: S
authors.lastname: Talarico-Filho
authors.forename: Maurício
authors.initials: M
authors.lastname: Mendonça DO Nascimento
authors.forename: Fernando
authors.initials: F
authors.lastname: Sperandeo DE Macedo
authors.forename: Carla
authors.initials: C
authors.lastname: DE Sanctis Pecora
mesh_terms: D000328:Adult; D001365:Axilla; D019274:Botulinum Toxins, Type A / Q000627:therapeutic use*; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D006945:Hyperhidrosis / Q000188:drug therapy*; D007267:Injections; D008297:Male; D008875:Middle Aged; D013546:Sweating / Q000187:drug effects
chemical_list: D019274:Botulinum Toxins, Type A