This section is from the book "Hartmann's Theory Acute Diseases And Their Homoeopathic Treatment", by Charles J. Hempel. Also available from Amazon: Theory of acute diseases, and their homoeopathic treatment.
§ 5. Critical symptoms in fevers are: excessive debility, chills, increase of heat, orgasm, vertigo, illusions of the senses, oppression, twitchings of the muscles, or even subsultus tendinum, delirium and cold sweats, accompanied by an unequal, often even intermittent, double-beating, frequent pulse; these symptoms can only be considered critical when they occur spontaneously, without having been occasioned by hurtful influences at a period when a crisis may naturally be expected, and the vital forces are not depressed. If we had it in our power, by establishing such a crisis, to restore in the patient the sensation of a full return of health, it would be foolish not to excite such a short-lasting struggle, and to maintain it until it should have accomplished its object. Very frequently, however, a crisis remains incomplete, the organism makes renewed and ineffectual efforts to complete it, and the result of this struggle is, in many cases, the transfer of the disease to a noble organ, whereby life is not only endangered but frequently terminated. A crisis is a dangerous occurrence in other respects; owing to "the general erethism of the organism, the crisis may easily be disturbed, in consequence of which the organism may relapse into the original disease, and, being already exhausted by the first attack, would be much more dangerously prostrated by the second. We will now proceed to a more detailed consideration of the critical phenomena.
§ 6. We believe, with others, that a critical sweat is a decisive sign of the equilibrium of the organism having been restored in fever, when the sweat is preceded by several cold creepings over the skin or itching of that organ, when it is accompanied by a soft, undulating pulse, a warm, soft, moist skin with a reddish tinge, when it covers the whole body uniformly, is neither too profuse nor lasts too long in proportion to the intensity of the fever; when the violence of the symptoms abates during the breaking out of the sweat, and the patient feels relieved. Generally, that sweat occurs as a result of the homoeopathic specific, and ought not to be disturbed in any way. The medicine should be stopped, the patient should be covered neither too warmly nor too slightly, he should remain in the same temperature, and keep perfectly quiet. If the breaking out of the sweat should have been prevented, or the sweat itself arrested in any manner, and if, in consequence of that suppression, new symptoms should have made their appearance, in that case the physician needs not to expect anything of the equilibrating influence of the sweat, and has at once to exhibit one of the following remedies in accordance with the symptoms: - Puls., Dulc, Acon., Cham., China, Merc, Phosp. ac, Sulp., and several others. If the sweat be too copious, if the patient feel exhausted while it occurs, and other alarming symptoms set in, the medicine has not been well chosen, and another remedy has at once to be administered, either for the purpose of terminating the sweat or transforming it into one of a favourable kind. The remedies which may be used for that purpose are: Stannum, Sulphur, Merc, Acid, phosp., Arsen..Phosph., Ipec, Bryonia, Verat., Lycop., and some others.
If the symptoms which indicate the probable occurrence of a critical sweat, should be complicated by an anxious restlessness, oppression of the chest, panting breathing, short cough, pains in the limbs, alternation of shuddering and sweat, etc., these symptoms may be considered the precursors of a rash which, if the symptoms should be too violent, may frequently be prevented by Aeon., Ipec, Bryo., Ars., Merc, each remedy to be administered in accordance with the indicating symptoms. Sometimes, however, it may be deemed advisable to favour the outbreak of the sweat, this result may be accomplished by Puis., Bryo., Cham., Arsen., Acid, phosp., Rhus, Staphys., and Sulphur, according as each remedy may be indicated. § 7. The critical urine is likewise seen in homoeopathic treatment and is a so much more favourable symptom than critical sweat as it is not accompanied with phenomena denoting a violent irritation of the organism. It has been frequently observed that a critical urine makes its appearance even after the most minute doses of a homoeopathic specific, showing that the reactive powers of the organism are constantly engaged, during a well-regulated treatment, in removing the disease and that these favourable critical changes are not accomplished by large doses of medicine. The precursory signs of a critical urine are: slight burning and pressing in the urinary passages, weight, drawing and tension in the lumbar region, increased desire to urinate, increased dryness of the skin, and increase of thirst, all these being symptoms which do not necessarily require a change of remedy. At first the urine exhibits a light cloud on the top and in the middle of the chamber; the cloud lowers itself more and more day after day, it increases and gradually reaches the bottom of the vase, where it forms a white, slimy, yellowish, flocculent sediment, or one which is light, coherent and somewhat elevated in the middle. The sediment is so much more decisive as it settles more speedily after the emission of the urine and is more copious; it is the more dangerous the longer the urine remains turbid. In general a change-able urine is a very dangerous symptom, as it shows a deficient reaction of the organism.
The following remedies may be used in cases of changeable urine, provided the other symptoms correspond: Canthar., Colocynth., Digit., Sassap., Acid. sulp. and phosp., Dulcam., and others; when the urine deposits a mucous sediment which does not reach the bottom of the vase: Puis., Ant. cr., Natr. mur., Acid, nit., Dulc, Nux v., Senega, Sulp., Sassap. Urine with purulent sediment might be treated with Canth., Sep., Acid, nitri., Puls., Lycop., Clematis and others, [also Mercurius, Cannabis, and Uva ursi. - Hempel.]