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Clinical Trial
, 134 (3), 301-4

Focal Hyperhidrosis: Effective Treatment With Intracutaneous Botulinum Toxin

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Clinical Trial

Focal Hyperhidrosis: Effective Treatment With Intracutaneous Botulinum Toxin

M Naumann et al. Arch Dermatol.

Abstract

Objective: To evaluate the effect of intracutaneous injections of botulinum toxin type A on excessive focal hyperhidrosis.

Design: Therapeutic before-and-after trial over 4 months.

Setting: Neurological and dermatological university departments.

Patients: Eleven patients with excessive axillary, palmar, or plantar hyperhidrosis fulfilling the following criteria: (1) local and systemic drug therapy had failed to improve their symptoms; (2) the patients were severely disabled with respect to their occupation and social activities; and (3) a successful treatment by botulinum toxin would obviate the need for destructive surgical procedures.

Interventions: Three mouse units of botulinum toxin (Botox) per 4-cm2 skin area was injected intracutaneously in 16 axillae, 8 palms, and 2 soles.

Main outcome measures: Reduction of hyperhidrosis as documented by the Minor iodine-starch test and gravimetrical assessment of local spontaneous sweat production measured over 1 minute.

Results: In all patients, botulinum toxin completely abolished sweating in the injected areas (P<.001) within 3 to 7 days. No relevant adverse effects occurred and no clinical recurrence of hyperhidrosis was observed within the follow-up period of up to 5 months. Occasionally, subclinical reactivation of sweat gland function was observed 4 months after treatment.

Conclusions: Intracutaneous botulinum toxin seems preferable to any hitherto used conservative or surgical procedures and may become the therapy of choice in pathological focal hyperhidrosis.

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