(The one or the other disease, according to the original bodily constitution, a peculiar mode of living, a peculiar disposition of the mind often arising from the individual education or a more receptive or more weakened condition of some part of the body, gives a peculiar direction to the disease, and thus causes the itch disease to lead to the origin of the one or the other disease, so as to show itself preferably in that one direction and develop itself in that particular modification. A passionate, peevish disposition gives an extraordinary predisposition to the development of the psora; so also previous exhaustion through frequent pregnancies, excessive nursing of infants, extraordinary hardships, exhausting erroneous medical treatment, debauchery, and a profligate mode of living. The internal itch-disease is, as before mentioned, of such a peculiar nature that it may remain, as it were, tied down and covered up for a long through external favorable surroundings, so that a man may seem to the superficial observer healthy for years, even for many years, until circumstances unfavorable to the body or the soul, or to both, may arise, and serve as a hostile impulse to awaken the disease slumbering within and thus develop its germs. His acquaintances and his physician, yea, the patient himself, can not then comprehend how his health could so suddenly fall into a decline. To bring some examples for explanation from my own experience: After a simple fracture of a limb attended with confinement to bed for five or six weeks, there may follow diseased conditions of another kind, the cause of which cannot be guessed, which diseased condition, even when measurably removed, nevertheless returns, and which even without any error in diet nevertheless at their return show aggravation. This is mostly the case in fall (winter) and spring and becomes a tedious ailment increasing from year to year, a lasting cure for which, without the substitution of a still worse disease for it by an allopathic cure, has been hitherto vainly sought for in the councils of former physicians and also in visits to mineral springs. There are in man’s life innumerable stumbling-blocks or unfavorable occurrences of this kind which serve to awaken the psora (the internal itch-disease) which till then has been slumbering (perhaps for a long time previously) and which cause its germs to develop. They are often of such a nature that the grave evils which gradually follow on them are out of all proportion to them, so that no rational man can consider those occurrences as sufficient causes for the chronic diseases which follow and which are often of a fearful character. But such a man is compelled to acknowledge a deeper seated hostile cause of these appearances, which cause has only now developed itself.
For example, a young married woman who, viewed superficially and according to the common standard, was healthy, but who had in her childhood been infected with psora, had the misfortune to be thrown out of her carriage while in the third month of her pregnancy, from which she suffered not only slight injury and the fright, but also a miscarriage, and the attending loss of blood gave her a considerable set-back. In a few weeks, however, her youthful constitution had pretty well recovered, and she might have been of a speedy return to lasting good health, when the announcement of the dangerous illness of a beloved sister, living at a distance, threw her back and augmented her former ailments, which had not yet been quite removed, by the addition of a multitude of nervous disorders and convulsions, thus turning them into a serious illness. Better news from her sister, indeed, follow, and at last good news. At last her sister, entirely restored herself, pays her a visit. But the sick young wife still remains sick, and even if she seems to recover for a week or two, her ailments nevertheless return without any apparent cause. Every succeeding confinement, even when quite easy, every hard winter, adds new ailments to the old, or the former disorders change into others still more troublesome, so that at last there ensues a serious chronic illness though no one can see why the full vigor of youth, attended by happy external surroundings, should not have soon wiped out the consequence of that one miscarriage; still less can it be explained why the unfortunate impression of those sad tidings should not have disappeared, on hearing of the recovery of her sister, or at least on the actual presence of her sister fully restored.
Hahnemann's three major publications chart the development of homeopathy. In the Organon of Medicine, we see the fundamentals laid out. Materia Medica Pura records the exact symptoms of the remedy provings. In his book, The Chronic Diseases, Their Peculiar Nature and Their Homoeopathic Cure, he showed us how natural diseases become chronic in nature when suppressed by improper treatment.