In pruritus ani and pruritus vulvæ, in addition to the various applications above, a cocaine ointment, one to ten grains to the ounce, a strong solution of the same (gr. v-xx to ℥j), and an ointment containing ten to thirty minims of the oil of peppermint to the ounce; sponging with hot water, often affords temporary relief.
In pruritus vulvæ, moreover, astringent applications and injections of zinc sulphate, alum, tannic or acetic acid, in the strength commonly employed for vaginal injections, are at times curative.
In bath-pruritus weak glycerine lotions, and an ointment containing a few grains of thymol and menthol to the ounce sometimes give moderate relief. Turkish baths are sometimes free from subsequent pruritus.
CLASS VIII.—PARASITIC AFFECTIONS.
Tinea Favosa.
(Synonym: Favus.)
What is tinea favosa?
Tinea favosa, or favus, is a contagious vegetable-parasitic disease of the skin, characterized by pin-head to pea-sized, friable, umbilicated, cup-shaped yellow crusts, each usually perforated by a hair.
Upon what parts and at what age is favus observed?
It is usually met with upon the scalp, but it may occur upon any part of the integument. Occasionally the nails are invaded. It is seen at all ages, but is much more common in children.