Prognosis and Treatment. The former is always good, inasmuch as the lesions disappear spontaneously usually within two months. Treatment embraces local cleanliness, the correction of any discoverable errors in habits of living, mainly along dietary lines and the indicated remedy. The daily use of a hot borax bath, a 5 to 20 per cent. solution of sodium hyposulphite, or equal parts of alcohol and water will suffice for most cases but a 5 to 10 per cent. sulphur, salicylic acid or ammoniated mercury ointment may be of assistance in stubborn cases. General symptoms, apart from those of the skin, will usually determine the choice of such remedies as Arsen., Borax, Ferrum Phosphorus, Mez., Nat, ars., and Sulphur.