(b) the diagnostic delimitation problem is chiefly against [I. Syphilopsychoses], [III. Epileptoses], [VI. Somatopsychoses],
(c) the finer differentiation problem is between [X. Psychoneuroses] and [V. Encephalopsychoses]. (See [Epicrisis], propositions 9-12, 40-43, 72-73.)
| I. | Syphilitic Psychoses | SYPHILOPSYCHOSES |
| II. | Feeblemindedness | HYPOPHRENOSES |
| III. | Epilepsy | EPILEPTOSES |
| IV. | Alcoholic, Drug, and Poison Psychoses | PHARMACOPSYCHOSES |
| V. | Focal Brain Lesion Psychoses | ENCEPHALOPSYCHOSES |
| VI. | Symptomatic (Somatic) Psychoses | SOMATOPSYCHOSES |
| VII. | Presenile-Senile Psychoses | GERIOPSYCHOSES |
| VIII. | Dementia Praecox and Allied Psychoses | SCHIZOPHRENOSES |
| IX. | Manic-Depressive and Allied Psychoses | CYCLOTHYMOSES |
| X. | Psychoneuroses | PSYCHONEUROSES |
| XI. | Other Forms of Psychopathia | PSYCHOPATHOSES |
No conclusions are intended to be drawn in these introductory pages. Such conclusions as are risked are placed in the [Epicrisis (see Section E)]. But so much can be said: If we are ever to surround the problem of Shell-shock (intra bellum or post bellum), we must approach it with no artificial and à priori limitations of its scope. We must not even agree beforehand that Shell-shock is nothing but psychoneurosis: that would be a deductive decision unworthy of modern science. In the collection of these cases, I have tried to place the topic upon the broadest clinical base. Samples of virtually every sort of mental disease and of several sorts of nervous disease have been laid down, some obviously not instances of Shell-shock, some mixed with clinical phenomena of Shell-shock, others hard to tell offhand from Shell-shock—the whole on the basis that we shall earliest learn what Shell-shock, the pathological event, is by studying what it is not. As the sequel may show, we are perhaps not entitled to regard Shell-shock, the pathological event, as always associated with shell-shock, the physical event. We shall, therefore, find in [Section A] (see tables on pages [6] and [7]).
(1) Cases without either physical shell-shock, or pathological Shell-shock—psychoses of various kinds incidental in the war (--+).
(2) Cases with physical shell-shock but without pathological Shell-shock—psychoses of various kinds seemingly liberated by, aggravated by, or accelerated by the physical factor of shell-shock (+-+).
(3) Cases without physical shell-shock but with both symptoms of pathological Shell-shock as well as of other psychosis (-++).
(4) Cases with physical shell-shock, with clinical phenomena of Shell-shock, as well as of other psychosis (+++).