CHAPTER V
SOME OTHER SIGNS OF NERVOUSNESS
Habit Spasm
Next to refusal of food and refusal of sleep perhaps the most frequent manifestation of nervous unrest is provided by the group of symptoms which we may call, with a certain latitude of expression, Habit Spasms. By a habit spasm is meant the constant repetition of an action which was originally designed to produce some one definite result, but which has become involuntary, habitual, and separated from its original meaning. The nervous cough forms a good example of a habit spasm. A cough may lose its purpose and persist only as a bad habit, especially in moments of nervousness, as in talking to strangers, in entering a room, or at the moment of saying "How do you do" or "Good-bye." Twitching the mouth, swallowing, elongating the upper lip, biting the lips, wrinkling the forehead so strongly that the whole scalp may be put into movement, and blepharospasm are all common tricks of little children which may become habitual and uncontrolled. In worse cases there may be constant jerking movements of the head, nodding movements, or even bowing salaam-like movements. In mild cases we may note hardly more than a restless movement of mouth or forehead, or constant plucking or writhing of the fingers whenever the child's attention is aroused, when he is spoken to, or when he himself speaks. In nervous children these movements, which should properly be confined to moments of real emotional stress, become habitual, and are displayed apart from the excitement of particular emotions. Whatever their intensity, habitual and involuntary movements of this nature should not be overlooked, and should be regarded as evidence of mental unrest. They do not commonly appear during the first or second years of the child's life. They are more frequent after the age of five, but they may begin to be marked as early as the third year. With refusal of food and refusal of sleep they form the three common neuroses of early childhood.
Two of the three qualities which we have mentioned as characteristic of the child's mind are concerned in the causation of habit spasm. In the early stages the movement is sometimes due to imitation, but the susceptibility of the child to suggestion plays the chief part in determining its persistence. It is an interesting speculation how far tricks of gesture, attitude, or gait are inherited and how far they are acquired by imitation. A child by some characteristic gesture may strikingly call to mind a parent who died in his infancy. A whole family may show a peculiarity of gait which is at once recognisable. It is told of the son of a famous man, who shared with his father the distinctive family gait, that when a boy his ears were once boxed by an old gentleman who chanced to observe him hurrying to overtake his parent, and who resented what he took to be an act of impertinent caricature. In the reproduction by the child of the habitual actions of his parents, heredity is largely concerned, but imitation too plays its part. In habit spasm the force of imitation is clearly seen. A child who has developed a habit spasm of one sort or another will readily serve as a model to other children. The malady will sometimes spread through a school almost with the force of a contagious disorder. A child affected in this way may prove an unwelcome guest. The little visitor with a trick of contorting his mouth and grimacing is apt to leave his small host an expert in faithfully reproducing the action. A cough that is genuine enough in one member of the family may produce a crop of counterfeits in brothers and sisters.
The force of suggestion acting upon the child's mind can clearly be traced. Once his attention is focused upon the particular movement by unwise emphasis on the part of the parents, he loses the power to control its occurrence. This trio of common neuroses—refusal of food, refusal of sleep, and habitual involuntary movement—grows only in an atmosphere of unrest and apprehension. Parents and nurses anxiously watch their development. They are distressed beyond measure to note their steady growth in spite of every attempt which they make to control or forbid them. And of all this unrest and unhappiness the child is acutely conscious. The whole household may become obsessed with the misfortune which has befallen it, and the mother, losing all sense of proportion, feels that she cannot regain her peace of mind until it has been overcome. The child is in need of mental and moral support from those around him, and all that he finds is an openly expressed apprehension and sense of impotence. Even grown-up people, when their nerves are on edge, are apt to be obsessed by uncontrollable impulses or by vague and nameless apprehensions, and surely all have learnt the support they gain from contact and conversation with some one strong and sane, who treats their worries in such a matter-of-fact way that immediately they lose their power and become of no account. The child with habit spasm cannot control these movements. The more he is reproved or entreated, the less able does he find himself to hold them in check. He does not wish them to continue. He has lost control of what he once controlled, and the realisation of this is not pleasant, and may be alarming to him. Yet when unconsciously he looks to his mother for support, he finds in her open dismay that which serves only to increase his uneasiness. She must subdue her own feelings and give the child strength. If she treats the whole thing in a matter-of-fact way, as a temporary disturbance which is of no importance in itself, and only has meaning because it implies that the brain has been over-stimulated, she will no longer exercise a prejudicial effect on the child. If the bad habit is taken as a matter of course, if too much is not made of it, if the child is encouraged to think that nobody cares much about it at all, then recovery will soon take place. It goes without saying that habit spasms and tics of all sorts are made worse by excessive emotional display and by nervous fatigue. On the other hand, if the child becomes absorbed in some interesting occupation, the movements will disappear for the time being.
Air Swallowing, Thigh Rubbing, Thumb Sucking
At a somewhat earlier age than that in which habit spasms become common, and before bed wetting appears as a formidable difficulty, we meet with another group of habitual actions which yet retain their voluntary character. Among such habitual actions are thumb sucking, thigh rubbing, and air swallowing. If the child is old enough to express himself on the subject, he will explain that these actions are performed because of the satisfaction derived from them, because it is "comfy" and "nice." Even if the child is too small to speak, the expression is that of beatitude and content. These actions are not confined to nervous children, and their occasional practice need not be taken to imply that there is any strong element of nervous overstrain. It is only when the action is repeated with great frequency and persistence, and when signs of irritation ensue if gratification is not obtained, that we are justified in classing it among the symptoms of mental unrest.
The second of these actions, thigh rubbing, is found for the most part in little girls, and inasmuch as it consists of a stimulation of the sexual organs sometimes causes much distress to the parents. It is in reality a habit of small importance unless exercised with very great frequency. It is, of course, not associated in the child's mind with any sexual ideas, and is of precisely the same significance as the other two actions of the same class. Children who can speak will refer to it openly without any sense of shame. As a rule the action is performed in a half-dream state, that condition between sleeping and waking which is found when the child is lying in the morning in her cot or in her perambulator after the midday nap. The child's attention should not be focused on the symptom. She should lie on a hard mattress, and when she wakes in the morning she should either leave her cot at once or she should be roused into complete wakefulness by encouraging her to play with her toys. Little children should be taught to sleep with their hands folded and placed beside the cheek. If the movement occurs on going to sleep, it is best left alone and completely neglected. As a rule each child has his or her own favourite action of this class, and they are seldom combined in the same child. If thigh rubbing is very constant and obstinate and does not yield to the measures suggested, it may even sometimes be a successful manoeuvre to substitute the thumb-sucking habit in the expectation that this less distressing habit may eject the other more objectionable action. As a rule, however, a wise neglect and careful watching during the drowsy condition that follows sleep in a warm bed will succeed in stopping the practice of thigh rubbing before the end of the second or third year. Apparatus designed to restrain movement of the child's legs or blistering the opposed surfaces of the thighs are both of no effect. They have indeed the positive disadvantage that they focus the child's attention on the practice. The habit ceases only when the child has forgotten all about it, and these devices serve only to keep it in remembrance. The same may be said of any system of punishments. Further, we cannot always have the child under observation, and at some time or other opportunity will be found for gratification. Of older children, in whom self-control and a sense of honour can be cultivated, I am not here speaking.
Air swallowing is less common than thigh rubbing, but belongs to the same group of actions and takes place in the same drowsy condition. The child will rapidly gulp down air which distends the stomach, and is then regurgitated with a loud sound. Thumb sucking seldom distresses the mother to the same extent, and the proper attitude of tolerance is adopted towards it. If much is made of it, it is astonishing how persistent the habit may become, surviving all attempts to forbid it, to break it by rewards or punishments, or to render it distasteful by the application of a variety of ill-tasting substances smeared on the offending digit.