[Skin necroses following the use of a 2-per-cent Pyoctanin solution].

The case of a child is reported in whom a circumscribed necrotic skin reaction developed in the gluteal fold after application of 2% crystal violet (Pyoktanin) in aqueous solution. Similar cases are described after topical treatment with 1% solutions of dyes. For direct application to intertriginous areas, triphenylmethane dyes should be used in lower concentrations.