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Correspondence
May 2011

Inverse Psoriasis and Hyperhidrosis of the Axillae Responding to Botulinum Toxin Type A

Author Affiliations

Author Affiliations: Department of Dermatology, Centre hospitalier de l'Université de Montréal (CHUM), Saint-Luc Hospital, Montreal, Quebec, Canada.

Arch Dermatol. 2011;147(5):629-630. doi:10.1001/archdermatol.2011.111

Inverse psoriasis, or flexural psoriasis, is characterized by erythematous, sharply demarcated, thin, shiny plaques that often itch and burn. Unlike plaque psoriasis, with inverse psoriasis, standard topical treatments may cause adverse effects in flexural areas.13 We report a case of concomitant inverse psoriasis and hyperhidrosis under the arms, both successfully treated with botulinum toxin type A injections (Botox; Allergan Inc, Irvine, California).

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