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Materia Medica Viva Volume 8 – page 1789

Nowadays we no longer see so many cases of weakness from continuous long-term loss of fluids, for severe losses of blood or other fluids are usually checked before the China state occurs. There are other causes that lead to a similar state of debility and prostration, mainly severe acute diseases, also influenza (Tyler: always chilly and cold after an influenza, believes that he will never be able to wear summer clothes again); lack of sleep by night- watching (but here Cocculus will be indicated more frequently); prolonged mental exertion
While it is indeed true that China serves a very useful purpose when a patient is suffering the consequences of haemorrhage, diarrhoea, or excessive perspiration, there are many other instances when China can also be of great service without such a history being present. However, these instances can be difficult to recognise. I was puzzled by China for a long time, before achieving a greater understanding of it, and prescribed many other remedies where China was appropriate. China can at times especially resemble Natrum muriaticum, Nux vomica and Lycopodium, and consequently one has a tendency to prescribe all of these remedies before arriving at a deeper understanding of the case in question.
Nervous Erethism
Debility and prostration are strong characteristics of the remedy, especially as a consequence of an acute disease, but they are not invariably present in a chronic case. A more reliable indicator is ‘nervous erethism’, a term which I believe describes best the essence of China. The nervous erethism comprises more than simple irritability; the patient is constantly irritated, but he also feels as if he is existing on the very edge of his nervous capacity; a constant highly-strung state of the nerves, touchy and edgy, extremely sensitive to all external influences. We get a hint of this from Hahnemann’s provings and his lucid footnotes: ‘Excessive sensitiveness of all the nerves, with a morbid sensation of