Understanding Homeopathy: 25 Fundamental Concepts Explained
I want to offer you an easy way to understand some of the fundamental concepts of homeopathy.
Over the years, I’ve realised that homeopaths sometimes have a language of their own. We use certain words and phrases so often within the homeopathic community that we can forget that, to someone outside it, they may not make much sense at all.
So I decided to put together 25 important homeopathic concepts and explain them in simple, everyday language.
For each concept, I’ll give you a simple explanation, followed by what Hahnemann actually meant by it and, where useful, a little clarification to help put the idea into context.
Hahnemann—the founder of homeopathy—developed and described his system in his most important work, the Organon of Medicine. So rather than relying only on how these terms are used by homeopaths today, I’ll also go back to Hahnemann’s own words and ideas in the Organon.
My aim isn't to make this overly academic or complicated. Think of it more as a homeopathic translation guide: taking some of the words you may hear in homeopathy and making them easier to understand.
So, whether you’re completely new to homeopathy or you’ve been around it for years, hopefully these 25 concepts will help make some of the language a little clearer.
25 important homeopathic concepts
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Simple: A disease or illness that develops relatively quickly and usually has a shorter course. It may appear suddenly, progress over a short period, and then resolve, either naturally or with treatment.
Hahnemann: Hahnemann distinguishes acute diseases from chronic diseases. In the Organon, he describes acute diseases as those that have a relatively rapid course and tend toward recovery or death within a limited period. He also describes acute diseases that arise from external influences or from acute infectious/epidemic causes. In Hahnemann's framework, the physician considers the characteristic symptoms of the individual acute case when selecting the remedy.
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Simple: A temporary worsening or intensification of symptoms. In homeopathy, the term is particularly used when symptoms appear to become stronger after a remedy has been given.
Hahnemann: Hahnemann discusses medicinal aggravation, particularly in §157 of the Organon. He describes a situation where, after the appropriate remedy is given, the existing symptoms may be temporarily intensified. In his framework, a slight and short-lived intensification of the existing symptoms can indicate that the medicine is acting in a sufficiently similar direction to the disease.
He also distinguishes this from an excessive medicinal aggravation, which may occur when the medicinal action is too strong or the remedy is not appropriately matched to the case.
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Simple: A disease or health problem that persists over a long period, tends to recur, or does not resolve in the way an acute illness normally does.
Hahnemann: Hahnemann gives chronic disease a very particular meaning. In The Chronic Diseases and the Organon, he describes chronic diseases as conditions that do not tend toward spontaneous recovery and continue to progress or return over time. He believed that many chronic diseases were maintained by an underlying chronic miasm, particularly Psora, Sycosis, or Syphilis.
For Hahnemann, chronic disease therefore meant more than simply “a disease that has lasted a long time.” It was connected to his theory of an underlying chronic disease process that required appropriate treatment.cription text goes here
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Simple: A symptom or experience that occurs alongside the main complaint. It may not be the main reason the person seeks treatment, but it can be an important part of the overall symptom picture.
Hahnemann: In Hahnemann's approach, symptoms that accompany the main complaint contribute to the totality of symptoms and can help individualize the case. A concomitant can become particularly valuable when it is unusual, characteristic, or closely connected with the main complaint.
For example, a person may have a headache accompanied by nausea, sensitivity to light, or an unusual sensation in another part of the body. These accompanying symptoms can help distinguish one remedy from another.
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Simple: The person's overall physical, mental, and functional makeup—the particular way they tend to experience life, respond to their environment, and express illness.
Hahnemann: Hahnemann considered the individual patient as a whole, rather than viewing disease as something completely separate from the person. His case-taking includes the patient's physical condition, mental and emotional state, lifestyle, habits, circumstances, and individual characteristics.
The word constitution, however, needs some care when attributed directly to Hahnemann. Later homeopathic literature developed the idea of a “constitutional type” or “constitutional remedy” much more extensively than Hahnemann himself did. Therefore, the modern homeopathic use of “constitution” should not automatically be treated as a precise Hahnemannian doctrine.
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6. DILUTION
Simple: The process of reducing the concentration of a substance by mixing it with a larger amount of a carrier substance, such as water or alcohol.
Hahnemann: Dilution is an essential part of Hahnemann's method of preparing homeopathic medicines. He developed serial dilution combined with succussion, which he believed could reduce the harmful effects of a substance while developing its medicinal power. This process became part of what is known as potentization.
Hahnemann did not simply dilute substances once. He described a systematic process in which the substance was repeatedly diluted and succussed according to a particular scale.
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Simple: The amount of a remedy that is given to a patient at one time, or the amount administered over a particular period.
Hahnemann: Hahnemann gave considerable importance to the dose of the medicine. He believed that the physician should use the smallest dose capable of producing the desired medicinal action, while avoiding unnecessary or excessive effects. His approach to dose changed throughout his life, particularly in his later editions of the Organon, where he increasingly emphasized very small doses and careful repetition.
For Hahnemann, the dose was not simply about the physical quantity of the substance. It was connected with the strength of the medicinal action, the susceptibility of the patient, the potency being used, and whether or not the remedy needed to be repeated.
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Simple: The cause or circumstances that led to the development of an illness. It asks the question: “What happened before this problem began?”
Hahnemann: Hahnemann considered it important to investigate the exciting or fundamental causes of disease when taking a case. In §5 of the Organon, he directs the physician to consider significant circumstances in the patient's life, including physical causes, emotional events, occupation, habits, lifestyle, and other factors that may have contributed to the illness.
Understanding what happened before the illness began can help the physician understand the case more completely.
For example, a complaint may have begun:
After an injury.
Following a period of intense grief.
After exposure to cold or damp.
Following excessive exertion.
After a significant change in lifestyle.
The cause is therefore part of the story of how the illness developed, although it is not necessarily the same thing as a maintaining cause.
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Simple: The first remedy prescribed for a patient after the initial case (first consultation) has been taken and analysed. It is seen like the remedy that opens the case.
Hahnemann: The first prescription is important because it represents the physician's initial understanding of the patient's individual symptom picture and the remedy that most closely corresponds to it. Hahnemann emphasizes careful case-taking, individualization, and selection of the medicine according to the totality of characteristic symptoms.
The first prescription therefore should not simply be based on the name of the disease. It should arise from the particular symptoms and circumstances of the individual patient.
The physician then observes what happens after the prescription rather than immediately changing the remedy.
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Simple: The process of observing and assessing the patient after the remedy has been given. The aim is to observe how the patient responds, what changes are taking place, and what direction the case is moving in.
Hahnemann: Follow-up is an important part of Hahnemann's method because the physician needs to observe how the disease changes after the prescription.
The physician looks at the original symptoms and asks:
Are the symptoms improving?
Are they becoming weaker or disappearing?
Are new symptoms appearing?
Has the patient's general state changed?
Is the original remedy still acting?
Has the case developed in a different direction?
Hahnemann cautions against unnecessarily interfering with an improving case. If the remedy is still acting and the patient is improving, repeating or changing the medicine may not be necessary.
The follow-up is therefore not simply checking whether a patient “feels better.” It is an opportunity to observe the direction and nature of the changes in the case.
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Simple: The idea that each person experiences illness in their own particular way, and that these individual differences should be taken into account when selecting a remedy.
Hahnemann: Individualization is central to Hahnemann's approach. The physician should not prescribe simply because a patient has a particular disease diagnosis. Instead, the physician studies the individual expression of the disease through the complete and characteristic symptom picture.
Two people may have the same diagnosis but express it very differently. One person's symptoms may have different sensations, locations, modalities, accompanying symptoms, mental and emotional characteristics, or circumstances of onset from another person's.
For Hahnemann, these differences are important because the remedy is selected according to the similarity between the patient's individual symptom picture and the medicinal picture.
This is why the question is not simply:
“What remedy is used for this disease?”
but rather:
“What is characteristic about this person's illness?”
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Simple: The principle that a substance capable of producing a particular pattern of symptoms in a healthy person may be used, according to homeopathic principles, to treat a sick person showing a similar pattern of symptoms - “Like cures like”.
Hahnemann: The Law of Similars is the central principle of Hahnemann's system. He expressed it through the Latin phrase Similia similibus curentur, commonly translated as “like cures like.”
In §26 of the Organon, Hahnemann explains that a weaker dynamic affection can be permanently extinguished by a stronger, similar affection. This principle is the foundation for selecting a remedy according to the similarity between the symptoms produced by the medicine and the symptoms experienced by the patient.
The remedy is therefore not selected simply because it is traditionally associated with a particular disease.
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Simple: Something that continues to keep an illness or symptom going after it has begun.
Hahnemann: Hahnemann refers to a “manifest exciting or maintaining cause” in §7 of the Organon. He tells the physician to consider whether there is an identifiable cause that needs to be removed.
A maintaining cause is therefore something that is still acting on the patient and helping to sustain the illness.
For example, if someone develops a skin problem from continual exposure to an irritant and remains exposed to it every day, the exposure may continue to maintain the problem.
This is different from simply asking what originally caused the illness. The important question is:
“What is still happening that is keeping this problem going?”
This is also why the maintaining cause should not automatically be confused with the obstacle to cure. They can overlap, but they ask slightly different questions.
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Simple: In homeopathic theory, a deeper underlying tendency or chronic disease influence thought to contribute to the development and persistence of chronic illness.
Hahnemann: Miasm is particularly important in Hahnemann's later work on chronic disease. In The Chronic Diseases and the Organon, Hahnemann proposed that certain chronic diseases could not be fully understood simply by looking at the immediate symptoms or causes. He developed a theory of underlying chronic disease influences, which he identified principally as Psora, Sycosis, and Syphilis.
Hahnemann considered these chronic miasms to be important in understanding diseases that persisted, returned, or developed in increasingly complex forms.
It is important to remember that Hahnemann's concept of miasm developed over time and became particularly prominent in his later writings.
Later homeopaths expanded the concept considerably, sometimes using “miasm” to describe constitutional, inherited, psychological, or broader patterns of disease. These later interpretations should not automatically be attributed to Hahnemann himself.
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Simple: The circumstances that make a symptom better or worse.
A modality answers questions such as:
What makes it worse?
What makes it better?
Is it worse at a particular time?
Does movement help or aggravate it?
Does warmth or cold affect it?
Does pressure help?
Does eating, lying down, or standing change it?
For example:
“My headache is worse when I move but better when I lie still.”
The “worse from movement” and “better from lying still” are modalities.
Hahnemann: Hahnemann placed great importance on the circumstances surrounding a symptom. In §153 of the Organon, he particularly emphasizes striking, singular, uncommon and characteristic symptoms when searching for the remedy.
The circumstances that modify a symptom can be highly individualizing. A headache by itself is a relatively common symptom. A headache that is specifically better from pressure and worse from movement, for example, gives the physician much more information about the individual case
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Simple: Anything that gets in the way of a person recovering or makes recovery more difficult.
Hahnemann: In §3 of the Organon, Hahnemann says that the physician should know the “obstacles to recovery in each case” and know how to remove them so that the restoration can be permanent.
The idea is broader than simply identifying the cause of the disease. The physician also needs to consider whether something in the patient's circumstances, habits, environment, or way of life is interfering with recovery.
For example, a person may be trying to recover while continually exposed to an unhealthy environment, severely deprived of sleep, or continuing a behaviour that is detrimental to their health.
The important question is:
“What is preventing this person from recovering?”
A maintaining cause can sometimes also be an obstacle to cure, but the two concepts are not identical.
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Simple: In homeopathy, the term used to describe the level or stage of preparation of a remedy produced through serial dilution and succussion.
Hahnemann: Hahnemann developed the process of potentization, in which a substance was repeatedly diluted and succussed. Different stages of this process were designated as different potencies.
Examples include:
6C
30C
200C
1M
Hahnemann's later work increasingly focused on very small doses and the careful use of potentized medicines. He also recognized that different patients could respond differently depending on their susceptibility and the strength of the medicinal action.
It is important to distinguish potency from dose. Potency refers to the level of preparation of the remedy, while dose refers to how much of that preparation is administered.
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Simple: A tendency or vulnerability that makes a person more likely to develop a particular illness or pattern of illness.
Hahnemann: Hahnemann recognized that people differ in their predisposition and susceptibility to disease. In the Organon, he discusses the fact that the same external influence does not affect every person in the same way.
A particular circumstance may cause illness in one person but have little or no effect on another. The individual's existing state, susceptibility, lifestyle, circumstances, and other factors influence how disease develops.
Predisposition is therefore better understood as a tendency rather than a certainty.
A person can have a predisposition toward a particular type of illness without necessarily developing it.
It is closely related to susceptibility, but they are not quite the same:
Predisposition = a tendency toward developing a particular kind of illness.
Susceptibility = the capacity or tendency to be affected by an influence.
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Simple: The decision about which remedy to give, in what potency and dose, and how and when it should be administered.
Hahnemann: For Hahnemann, prescribing was not simply a matter of choosing a medicine for a disease name. The physician first needs to understand the individual case and determine which medicine has the greatest similarity to the patient's characteristic symptoms.
The prescription therefore involves several decisions:
Which remedy?
What potency?
What dose?
How should it be administered?
Should it be repeated?
When should it be repeated, if at all?
Hahnemann's approach also emphasizes observing the patient after the prescription and avoiding unnecessary interference when improvement is taking place.
The prescription is therefore the point where the physician's understanding of the case is translated into action.
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Simple: The changes that occur in the patient after a remedy has been given.
Hahnemann: Hahnemann considered the patient's response after a prescription to be an important part of managing the case. The physician observes whether the symptoms improve, change, disappear, or whether new symptoms arise.
The response helps the physician determine whether the remedy is still acting, whether the patient is improving, or whether a different approach may be necessary.
Hahnemann repeatedly emphasizes the importance of observing rather than continually interfering with the case. If improvement is taking place, the physician should not unnecessarily disturb the process by repeatedly prescribing.
A response may therefore include changes in:
The main complaint.
Characteristic symptoms.
General wellbeing.
Mental and emotional state.
Sleep, appetite, energy, or other general symptoms.
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Simple: In homeopathic terminology, suppression refers to the idea that removing or stopping an outward symptom without addressing the underlying disease may cause the illness to become deeper, more internal, or to reappear in another form.
Hahnemann: Hahnemann discusses this idea particularly in relation to local symptoms and external applications in §§194–203 of the Organon. He was concerned about situations where a local manifestation of disease was externally removed while the underlying disease remained.
He argued that simply removing the visible symptom did not necessarily remove the underlying disease and could sometimes be followed by the development of other, more serious manifestations.
For Hahnemann, the physician should therefore not be satisfied merely with removing an isolated external symptom. The aim was to treat the whole disease state.
The concept of suppression became especially important in later homeopathic literature, where it was expanded to include many forms of symptom removal or treatment.
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Simple: The individual's tendency or capacity to be affected by an influence.
Hahnemann: Hahnemann considered susceptibility an important part of understanding why people respond differently to the same influences. A person may be more or less susceptible to disease, to external influences, and also to the effects of medicines.
This helps explain why the same circumstance does not affect everyone in the same way. One person may become ill after an exposure while another remains unaffected. Likewise, different people may respond differently to the same medicinal substance.
Susceptibility is closely connected with the individual's overall state. In Hahnemann's framework, the physician therefore needs to consider not only the external cause but also the condition of the person who is being affected by it.
It is useful to distinguish susceptibility from predisposition:
Susceptibility = the capacity or tendency to be affected by an influence.
Predisposition = a tendency toward developing a particular type or pattern of illness.
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Simple: The complete picture of the patient's illness, including the symptoms that are characteristic and individual to that person. It means looking at the person as a whole—physically, mentally and emotionally—rather than focusing on just one symptom or the name of the disease.
Hahnemann: The totality of symptoms is central to Hahnemann's method. In the Organon, he describes the totality of the symptoms as the “outwardly reflected picture of the internal essence of the disease.” It is through this observable picture that the physician understands the disease and determines what needs to be treated.
The totality is not simply a long list of every symptom the patient has ever experienced. The physician pays particular attention to symptoms that are striking, peculiar, characteristic, and individualizing.
This is why two people with the same diagnosis may require different remedies in homeopathic practice. The disease name may be the same, but the totality of symptoms may be very different.
For example, instead of simply recording:
“The patient has a headache.”
the physician would want to understand the whole picture:
Where is the headache?
What does it feel like?
When did it begin?
What makes it better or worse?
What accompanies it?
What other physical symptoms are present?
What is the person's general state?
Are there important mental or emotional symptoms?
All of these details help build the individual picture.
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Simple: Something that sets off or brings on a symptom, episode, or illness. It is the event or influence that makes something happen.
Hahnemann: Hahnemann used the term “exciting cause” rather than the modern word “trigger.” In §5 of the Organon, he asks the physician to investigate the “most probable exciting cause” of the disease. This means looking at what happened before the illness began or what may have precipitated the particular episode.
For example, a person may develop a headache after a period of intense emotional stress, develop back pain after lifting something heavy, or experience an asthma episode after exposure to an irritant. In each case, the event may be described as a trigger or, in Hahnemann's terminology, an exciting cause.
It is useful to distinguish a trigger from a deeper predisposition. The trigger may be the spark that sets something off, but it does not necessarily explain why that particular person was susceptible to developing the problem in the first place.
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Simple: Hahnemann's concept of the dynamic principle that maintains the organism in a state of health and coordinates its functioning. I see it more as the inner wisdom the body has to heal itself.
Hahnemann: The vital force is one of the central ideas in Hahnemann's understanding of health and disease. In §9 of the Organon, he describes the healthy vital force as maintaining the organism in a state of “harmony” and enabling the organism to function according to its purpose.
When the vital force is disturbed, disease appears through the signs and symptoms that can be observed in the patient.
Hahnemann therefore did not view symptoms as merely isolated problems that needed to be removed individually. They were the expression of the disturbed state of the organism.