To the Editor: Hyperhidrosis is uncontrollable, excessive sweating. Severe primary focal palmar hyperhidrosis is a significant disability. It interferes with many activities of daily living and induces social avoidance behaviours that can lead to symptoms of social anxiety disorder. Symptoms begin in childhood or around puberty and affect both sexes equally.1
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- 1. Fealey RD, Hebert AA. Disorders of the eccrine sweat glands and sweating. In: Goldsmith LA, Katz SI, Gilchrest BA, et al, editors. Fitzpatrick’s dermatology in general medicine. 8th ed. New York: McGraw-Hill, 2012: 936-946.
- 2. Bhidayasiri R, Truong D. Expanding use of botulinum toxin. J Neurol Sci 2005; 235: 1-9.
- 3. Shelley WB, Talanin NY, Shelley ED. Botulinum toxin therapy for palmar hyperhidrosis. J Am Acad Dermatol 1998; 38: 227-229.
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