The only other caution which remains for me to give refers to the peculiar effect which salicine, a very valuable medicine, especially in the case of thread-worms, has upon the urine. It sometimes turns the urine of a greenish-yellow, often of a red colour, as though it were mixed with blood. The appearance, however, has no grave meaning, but is due simply to a chemical action of the medicine on the colouring matter and salts of the urine.
There still remain some local ailments of parts connected with the process of digestion, concerning which a few words must be said.
Ulcerated Mouth.—First, with reference to the sore-mouth of children. I have already noticed a form of inflammation and ulceration of the gums sometimes met with during teething, but the sore-mouth of which I am now about to speak is often quite independent of that process; though it may sometimes be found associated with it, and is indeed rarely met with after five years of age. In almost all instances it is preceded and attended with symptoms of indigestion, during the course of which the mouth becomes inflamed, hot and red, and small very painful shallow ulcers with sharp-cut edges, and a little yellowish deposit on their surface, appear at the edge of the tongue, on the inside of the mouth, and especially on the inside of the lower lip, and the adjacent surface of the gum. Successive crops of these little ulcerations not unfrequently appear, so that for many weeks the child may be kept by them in a state of extreme discomfort; swallowing, and even speaking being the occasions of considerable suffering.
It is seldom that nursery remedies, and the so-called cooling medicines, though often of some service, suffice to get rid of the ailment, which for the most part needs judicious medical treatment, and local as well as constitutional measures. Now and then this condition comes on in the course of measles, and is then sometimes of serious importance.
In the other form, the disease is usually limited to the gums, and affects especially those of the front of the lower jaw, which become swollen, ulcerated at their edges, where a very ill-smelling deposit takes place of a dirty white or greyish colour, the surface beneath being spongy, swollen, raw, and bleeding. The ulceration sometimes extends so as to lay bare a large part of the sockets of the teeth; but though loosened they seldom drop out. Coupled with this, the glands at the angle of the jaw are swollen, and the child dribbles constantly a large quantity of horribly offensive saliva. In the children of the well-to-do classes the condition is seldom seen except in a slight degree; but even when severe it is rarely accompanied by any grave disorder of the general health. It seems to tend, whether treated or left to itself, slowly to get well; but its progress to a natural cure is extremely tedious, and the gums are left by it for a long time spongy, bleeding easily, and only very imperfectly covering the teeth.
Anxiety is sometimes excited by this condition; it being supposed that the white deposit on the edge of the gum implies some relation between it and diphtheria. This is not so, for though this peculiar ulceration of the gums has now and then been found associated with diphtheria, the nature of the two diseases is essentially different. It is, however, always wise to call in medical advice in order to settle this important question, and the more so, since there is one remedy, the chlorate of potass, which, in appropriate doses, acts upon the condition almost as a charm.
I say nothing about a dreadful form of inflammation of the mouth which ends in mortification, because it is of infinite rarity except among the destitute poor, and even among them it is very seldom seen except as a consequence of measles, or of some kind of fever. It is only among the very poor that I have seen it, and even among them it has come under my notice only ten times in the whole course of my life.
There is a very common but inaccurate opinion that sore-mouth in childhood is often produced by the employment of mercury. I never yet saw a sore mouth due to the administration of mercury in any child before the first set of teeth were entirely cut; and never but once out of 70,000 cases which have come under my notice in hospital or dispensary practice, have I seen in children of any age under twelve any affection of the mouth from mercury sufficiently severe to cause me a moment's anxiety.
Quinsey, or inflammatory sore-throat, has in it nothing specially peculiar to the child, but occurs at all ages with the same symptoms. It is, however, comparatively rare under twelve years of age, and is almost always less severe in childhood than at or after puberty, while I scarcely remember to have met with it under five years of age. This circumstance attaches special importance to sore-throat in young children, since it will usually be found to betoken the approach of scarlet fever, or of diphtheria, rather than the existence of simple inflammation, or quinsey.
While this fact affords a reason for most scrupulous attention to every case of sore-throat in children, and this in proportion to the tender age of the child, needless alarm is sometimes caused by the appearance on the inflamed tonsils of numerous white specks, which are at once supposed to be diphtheritic. I have already pointed out the distinction between the two conditions when speaking of diphtheria, but the matter is so important that I will repeat what I then said. These spots are not in the form of a uniform white patch or membrane, which, on being removed, leaves the surface beneath red, raw, and often slightly bleeding; but they are rather distinct circular spots, firmly adherent to the tonsil, wiped off with difficulty, and evidently exuding from the openings of little pits, blind pouches, or glands, with which the surface of the tonsil is beset. I do not advise any parent to rest satisfied with his or her judgment on this matter the first time that they notice this appearance; but there are children with whom slight sore-throat is always attended by this condition, and others in whom the tonsils are habitually enlarged, and seldom free from these white spots flecking their surface.