A soldier was bowled over in a trench by a big shell that burst nearby. He lost consciousness and was carried to the ambulance. But he came to, and was so absolutely well with a few hours’ rest that he took part in a lively attack shortly thereafter and got a wound in the left arm, affecting slightly the ulnar nerve. He was sent to the Salpêtrière for this ulnar nerve affection, when certain movements of his scalp were incidentally noted.

The scalp movements were quick, affecting the fronto-occipitalis muscles as well as the auricular muscles. The displacement was from behind forward, and then from before backward, with slight oscillations of the ear; and at the same time, the forehead wrinkled or became smooth. The movement was involuntary and more convulsive than the somewhat similar movements that many persons can execute with scalp and ears. The phenomenon appeared after the shock for the first time. He had not noticed it himself but the physician at the ambulance had called his attention to it. The soldier was not disturbed by the matter, either at that time or later.

The diagnostician would consider, on the one hand, tic, and on the other, spasm. According to Meige, the man was a victim of tic. No case of such limited spasm appears to have been observed previously. However, the sudden development of these movements without previous history of tic renders the diagnosis somewhat doubtful. There was also a complete anesthesia to pin-prick in the present case over the whole right side of the scalp, face, and neck, even passing below to involve the chest, shoulder, back, and upper part of the right arm, with hypesthesia decreasing toward the nipple and the elbow. The soldier was quite ignorant of this sensory disorder and had never before been examined for sensations. The examination was made with due precautions to avoid suggestion. The question of anastomosis between the facial nerve and the auriculo-temporal branch of the trigeminus and the auricular branch of the cervical plexus, and of their relations to the anesthesia and tic of this case, is raised.

Re pathological movements such as tremors, tics, and choreiform movements, Roussy and Lhermitte divide the tremors (see also under [Case 337]) into typical and atypical.

The atypical ones are either limited, or more usually generalized when they are merely parts of the Shell-shock syndrome. Sometimes the tremors are paroxysmal, aggravated by noises. Now and then, a condition of tremophobia appears (see [Case 225]). As for the typical tremors, see classifications under [Case 337].

Re tics, the tonic or postural tic is, according to Roussy and Lhermitte, much less common than clonic or spasmodic movements, which are Shell-shock phenomena like tremors and usually yield to psychotherapy if treated early. These tics are usually observed in and about the head, involving the sternomastoid, trapezius, and platysma muscles to produce clonic contractions of the neck. Other tics involve coarser head movements, nodding, eyelid and facial spasms, bilateral or unilateral, and shoulder movements. Babinski has suggested that some of the tremors are possibly due to organic disease, in view of the fact that they are not readily influenced by psychotherapy. Meige has suggested that some of the tics may also be in some sense organic. As for the differential diagnosis of tremor and tic, according to Roussy and Lhermitte, the Shell-shock onset may be an indicator. The non-rhythmic and irregular nature of the tic movements, and their exaggeration on voluntary movement, may be of some importance. Most of the tremors appear to be attended by a certain degree of permanent contraction of the muscle groups concerned. Tremors cease when these contractions disappear.

A point in treatment is that complete muscular relaxation should be obtained by having the patient open his mouth and breathe deeply.

Re diagnosis of neurasthenia in this case, it may be inquired whether the term is properly used, and whether there is not some confusion here betwixt neurasthenia and hysteria.

Re hyperalgesia, Myers states that about 25 per cent of his Shell-shock cases have shown a variety of disorders of the skin sense. Hyperesthesia and over-reaction is one phenomenon in the list, but is far less common than hyperesthesia. According to Myers, the hyperesthesia was more relative than absolute, and was probably due to increased affective response.