Prognosis and Treatment. The former is always favourable, though recurrences are frequent. Any of the formulae mentioned in the treatment of erythema hyperemicum may be applied if necessary, but commonly no local treatment is necessary beyond cooling lotions or dusting powders, or possibly a starch or bran bath, followed by applications of non-medicated oil or fat if desquamation is a feature. The internal remedy is all-important, especially to prevent a tendency to recurrence. See indications for Ailanth., Am., carb., Belladonna, China sulph., Colchicum, Hyoscy., Juglanms cin., Stramon. and Terebinth.