An American text-book of the diseases of childrenIncluding special chapters on essential surgical subjects; orthopaedics, diseases of the eye, ear, nose, and throat; diseases of the skin; and on the diet, hygiene, and general management of children . orm excites a dermatitisof the surrounding skin; it should then be left out of the formula. Affections of the mucous membranes, such as snuffles, should be treatedby douches of a 2 per cent, boric-acid solution, and any localized lesionstouched with nitrate of silver in strengths appropriate to the condition. 1148 AMERICAN TEXT-BOOK OF DISEASES OF
An American text-book of the diseases of childrenIncluding special chapters on essential surgical subjects; orthopaedics, diseases of the eye, ear, nose, and throat; diseases of the skin; and on the diet, hygiene, and general management of children . orm excites a dermatitisof the surrounding skin; it should then be left out of the formula. Affections of the mucous membranes, such as snuffles, should be treatedby douches of a 2 per cent, boric-acid solution, and any localized lesionstouched with nitrate of silver in strengths appropriate to the condition. 1148 AMERICAN TEXT-BOOK OF DISEASES OF CHILDREN. PARASITIC AFFECTIONS. Tinea Favosa. Favus is a vegetable parasitic disease affecting the skin and its append-ages. It is most common on the hairy scalp, though it occurs on the gen-eral surface, and at times attacks the nails. On the scalp the favus fungusgrows in the hair-follicle, in which it gives rise to an inflammation whichoften spreads to the adjacent tissues. If seen in the beginning, erythem-atous, scaly, itching patches will be noticed; after a time the scutula de-velop, and these are the characteristic clinical signs of the disease. At itsfull development the scutulum is a sulphur-colored, cup-like mass, slightly Fig. Achorion Schcenleinii in hair-shaft and follicle (after Kaposi). elevated above the surface of the scalp, surrounding a hair and dipping intothe follicle; these cups are about an eighth of an inch in diameter. In thethe course of time the scutula touch each other and become fused into agrayish crust, which, firmly adhering to the base of the hairs, may cover alarge portion of the scalp. The hairs in the affected area become dry and PLATE XXVIII.
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