This section is from the book "Materia Medica And Therapeutics Inorganic Substances", by Charles D. F. Phillips. Also available from Amazon: Materia medica and therapeutics.
In chronic prurigo - especially when connected with phthei-riasis, but also in independent forms - an ointment containing sulphur with a preparation of tar is often of much service. Anderson recommends 6 dr. of pix liquida in 4 oz. of ordinary sulphur ointment (Lancet, ii., 1869). Sulphur vapor baths are useful. In ordinary pruritus 1 find a lotion of sulphurated potash very effective (v. p. 34).