Re organic neurology, much of great value has been reported.
Sargent and Holmes say that, contrary to expectation, there have been few war cases of bad sequelae of cerebral injuries, such as insanity and epilepsy. During early stages, after infection of the head wounds, there is dulness and amnesia, irritability and childishness,—symptoms which disappear during and after repair of the wounds. Mental disorder requiring internment is surprisingly rare. During 12 months only eight cases were transferred from the head hospital in a year to the Napsbury war hospital, where cases of insanity attributable to the service are sent; and in but two of these could the persisting mental symptoms be attributed to head injury.
Col. F. W. Mott confirms the opinion of Col. Sargent and Col. Holmes, remarking that from all the London County Council Asylums, only one case of insanity associated with gunshot head wound had been admitted, and that this was one of a Belgian who died from septic infection of the cerebral ventricles. Yet all cases of insanity in invalided soldiers belonging to the London County Council area (about one-seventh of the population of the United Kingdom) are transferred to these asylums.
Again Sargent and Holmes point out that both generalized and Jacksonian epileptiform seizures are comparatively rare in patients suffering from recent head wounds; even convulsions in later stages have been as yet less common than was feared. Thus, after evacuation to England, fits occurred in 37 (6 per cent) of 610 cases with complete notes, and in only eleven of these 37 cases were the convulsions frequent. Sargent and Holmes remark, however, that the practice of giving bromides regularly to all serious cranial injuries until the wound is healed, and for some months afterwards, seems advisable. In 33 of the 37 convulsive cases there have been severe compound fractures of the skull, and in four of these a missile was still present in the brain. Five secondary operations were performed with good results, after drainage of small abscesses in two and removal of spicules of bone in three. The In-patient and Out-patient records of the National Hospital for the Paralyzed and Epileptic were searched for epileptics already discharged from the army, but notes of but two patients attending this hospital for epilepsy were found.
As for other neurological complications aside from septic infection and hernia formation, there are a few subjective symptoms that may necessitate the invaliding of soldiers. The most common of these is headache, usually in the form of a feeling of weight, pressure, or throbbing in the head, which headache is increased by noise, fatigue, exertion, or emotion. Attacks of dizziness also occur, and nervousness or deficient control over emotions and feelings. Changes of temperament are found in some soldiers, who become depressed, moody, irritable, or emotional, and unable to concentrate attention.
Foix, under the direction of P. Marie, worked upon aphasia in 100 cases, reporting results at a surgical and neurological meeting, May 24, 1916, in Paris. Only lesions on the left side of the brain have produced important and lasting speech disorder, although lesions on the left side may leave behind them a little dysarthria or difficulty in finding words in conversation. It is, of course, hard to tell speech disorder from stupor or clouding of consciousness. Foix notes certain specialties in speech defect according to which region of the left brain is affected.
First: Prefrontal lesions produce a transient dysarthria, lasting but a few weeks, and right-sided prefrontal lesions produce just as much disorder.
Occipital lesions produce no speech disorder.
Second: Patients with right-sided hemianopsia due to lesions of occipital regions were not aphasic and could read or write perfectly. Lesions of the left visual centers certainly do not affect reading. If, however, the injury is not to the visual centers, but is upon the lateral part of the occipital lobe, then alexic phenomena appear, and these the more the lesion approaches the temporal-parietal region.
Third: Central convolutional lesion produces a variety of disorders according to the site and extent of the lesion. There is no aphasia with the crural monoplegia due to superior paracentral disorder. But slight aphasic disorder accompanies the brachial monoplegia of middle central lesion, though writing, reading, and calculation are slightly affected, and the more so the more the lesion extends posteriorly to the stereognostic regions. The lower down in the precentral region the lesion appears, the more likely is the Broca syndrome to be observed. But if the hemiplegia is chiefly a brachial monoplegia, the aphasic disorder may remain slight, involving reading, writing, understanding of words, the spoken word, articulation, and calculation.