The torticollis is accompanied by a rather disagreeable sensation, a feeling of fatigue in the muscles concerned, of "dragging" in their bellies as well as at their insertions. The site of this sensation is over the left sternomastoid, on the right half of the posterior aspect of the neck, and deep in the right shoulder, whereas the upper parts of the trapezii, the left half of the neck and its anterior surface, and the right sternomastoid, are areas that are free from pain. Here, further, as in all cases of the same nature, the subjective sensations differ from day to day, and moment to moment. It is just as perplexing to localise these pains exactly as to fix the topoalgia of a neurasthenic. The lack of precision of the answers is no doubt explicable by the variability of the muscular contractions. Emotion, apprehension, the presence of strangers, tend to intensify the spasm, which tranquillity and rest will attenuate. On the other hand, the most trivial incident--a sudden noise, an unexpected question, the act of swallowing saliva, of putting out the tongue, etc.--will reawaken the latent torticollis; any surprise, any movement, or even the idea of a movement, suffices for its ebullition. Under the influence of the will, particularly after a time of rest, the head may sometimes reoccupy the mid position spontaneously, a result unfailingly obtained by distraction also, as when the patient is hearkening thoughtfully to her father's conversation. On her "bad days," however, the use of even considerable force fails alike to hinder the head's turning and to effect its replacement. That is to say, the resistance offered by the torticollis to reduction may at one moment be nil, at another, feeble, or forcible, or even insuperable. Some patients affected with mental torticollis seem to have lost the sense of position of their head, others evince a want of precision and assurance in the execution of different limb movements. Speaking generally, it may be said that downward movements of the arms are less good than upward ones, and that their synchronous and symmetrical action is accomplished with greater ease than is the operation of one only. The debut of mental torticollis is usually insidious. Whether head or shoulder be implicated first, the incipient motor reaction is infrequent, inconsiderable, and transitory. Little by little its frequency increases and its duration lengthens, till the end of a few months sees the torticollis established.