=Determination.=--The diagnosis or determination of the existence of measles must be made, in the absence of a physician, on the general symptoms rather than on the rash, which requires experience for its recognition and is subject to great variations in appearance, at one time simulating measles, at another scarlet fever. German measles differs from true measles in the following points: the preliminary period--before the rash--is mild, short, or absent; fever is mild or absent; the cold in the nose and eyes and cough are slight or may be absent, as contrasted with these symptoms in measles, while the enlarged glands in the neck are more pronounced than in measles. The onset of German measles is not so sudden as in scarlet fever and not accompanied with vomiting as in the latter, while the sore throat and fever are much milder in German measles. The peeling, which is so prominent in scarlet fever with the disappearance of the rash, is not infrequently present. It may be absent. Its presence or absence seems to depend upon the severity of the eruption. The desquamation when present is finer than in either measles or scarlet fever. =Outlook.=--Recovery from German measles is the invariable rule, and without complications or delay. =Treatment.=--Little or no treatment is required. The patient should remain in bed in a darkened room on a liquid diet while fever lasts, and be isolated from others indoors until all signs of the eruption are passed. The eyes should be treated with boric acid as in measles; the diet, during the fever, consisting of milk, broths, thin cereals, beef juice, raw eggs or eggnog, for adults and older children; while infants should have their milk mixture diluted one-half with barley water. A bath and fresh clothing for the patient, and thorough cleansing and airing of the sick room and clothing are usually sufficient after the passing of the disease without chemical disinfection.