This chapter explains that in order to use homœopathy accurately and effectively, a physician must clearly understand the scope and limits of the law of Similia. Many homœopaths either overestimate homœopathy and attempt impossible cures, or underestimate it and turn to allopathic measures even when homœopathic treatment would work. Both errors bring discredit to the system. Real advancement in homœopathy requires scientific, rational application of its principles, not random successes or boastful claims. Though the principle of Similia and methods of prescribing are well-established, the exact field in which homœopathy works best still needs clarification.
Homœopathy primarily concerns itself with the dynamic or functional aspect of disease, not with the material effects or end-products like tumors or lesions. Disease, as defined by Hahnemann, is an internal disturbance in the vital force, which expresses itself through perceptible symptoms. The focus of homœopathic treatment is not the physical product of disease but the earlier, functional disturbance that led to it. Therefore, the homœopath must learn to distinguish between primary (functional) and secondary (structural) symptoms. The order in which symptoms appeared helps identify which are functional and which are pathological. Treatment is based on the totality of functional symptoms, which represent the true disease.
Homœopathy works in the field of vital dynamics—dealing with changes in function, sensation, metabolism, and motion that result from the dynamic action of external morbific agents. All disease phenomena occur in this realm of motion and change, and it is this realm where homœopathy operates. The purpose of treatment is to restore balance and harmony in vital functioning, and not necessarily to remove the visible end-products of disease. Hahnemann emphasized that only the externally visible and sensible symptoms—those felt by the patient and observed by others—represent the disease. The internal essence of the disease is understood through these symptoms. Trying to find disease by looking into the body is as meaningless as trying to locate a thought in the brain—it can only be perceived through its outward effects.
Homœopathy does not directly deal with causes, injuries, or physical conditions, but rather with the altered functional state that remains after the cause has acted. It is assumed that the physician will first remove the cause and correct lifestyle errors before giving the homœopathic remedy. Once obstacles to cure are removed, the correct remedy is selected based on the similarity of its symptoms to those of the patient. Although tumors or tissue damage are not the direct focus of homœopathy, functional disturbances that lead to or result from them can be addressed. This often leads to improved health, reduced tumor growth, or healing of ulcers—not as a primary goal, but as a secondary benefit of restored vital balance.
To further define homœopathy’s scope, the author uses the exclusion method proposed by Dake. Homœopathy does not apply when: (1) the cause of disease is still present and acting, (2) the condition heals itself after removing the cause, (3) the tissues are destroyed beyond repair, (4) the body’s reactive power is too weak, and (5) there are no observable or similar symptoms to guide remedy selection. The ideal cases for homœopathy are those with clear symptoms, removed causes, intact vitality, and a functional disturbance caused by dynamic agents.
Diseases may arise from three main types of causes: mechanical, chemical, and dynamic. Mechanical causes include injuries, structural defects, or foreign bodies, which fall under surgery and physical treatment. Chemical causes, such as poisonings, may need antidotes first, but homœopathy can help afterward to restore normal function. Dynamic causes, like mental shocks, weather influences, poor hygiene, or infections, are the real field for homœopathy. These causes disturb the vital force and produce perceptible symptoms, which homœopathic remedies can address effectively.
Homœopathy treats infectious and bacterial diseases not by killing the germs directly, but by enhancing the patient’s natural resistance and vitality. Sanitation and disinfection are used in the environment, not inside the patient. The remedy works by stimulating the body to overcome the disease. Dake further explains that homœopathy does not apply to agents that act chemically, mechanically, nutritionally, or to kill parasites. It only applies to medicines that can produce symptom-similarity in a healthy person, and act dynamically. Even nutrition, according to Fincke, involves mutual action—supporting the idea that the principle of Similia is at work even in assimilation.
Though homœopathy does not aim for palliation, there are exceptional cases—such as shock, poisoning, or unbearable pain—where temporary use of palliative measures is acceptable. Hahnemann himself allowed the use of stimulants or antidotes in cases like asphyxia, lightning strike, or poisoning, where there is no disease to cure, just a need to revive life. Similarly, in cases like renal or biliary colic, where pain is unbearable, temporary palliation may be used until the homœopathic remedy can take effect.
Finally, the author advises that while a homœopathic physician should be principled and idealistic, he must also be practical, flexible, and compassionate. Some situations require temporary compromise, especially when dealing with new patients or emergencies. If confidence and time are lacking, the physician may use palliation to gain trust and buy time. In some cases, he may even have to withdraw from the case. True strength lies not in rigid rule-following but in wise, adaptable action. Just like a general may retreat strategically to win later, a homœopath may temporarily yield to treat more effectively later. This too is a kind of moral homœopathy.