Acrodermatitis continua of Hallopeau (ACH) was first described in 1890 by Henri Hallopeau.1 He had observed a single patient with an undulating but recalcitrant pustular destruction of the fingertips and toes.1 Nowadays, this condition is considered a subtype of localized pustular psoriasis.
Muggli D, Maul J, Anzengruber F, Fopp MW, Navarini AA. Secukinumab for Acrodermatitis Continua of Hallopeau. JAMA Dermatol. 2017;153(4):336–337. doi:10.1001/jamadermatol.2016.5059
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