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Injury, infection or an unhealthy lifestyle can all make you ill. So can your genes, the instructions that tell your body how to make all the different proteins it needs to survive and grow. A change in a gene may cause a change in a protein, affecting the way it works in your body. Some genes are involved in common illnesses, while others cause rare genetic conditions.
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There are primary diseases that have a constant nature, such that they are easy to recognize when they re-appear, such as measles, chickenpox, yellow fever, cholera.

These primary, constant nature diseases can give rise to one or more variants, or secondary diseases. Which ones will arise in a given person, once affected by the primary disease depends on a number of factors, including one’s constitution, typology, etc. Thus, we say that these secondary diseases are of a variable nature.

Primary, Constant Diseases:

– homogenic – they arise from the principle of irritant action

– pathogenic – they arise from the principle of infectious action

– iatrogenic – they arise from the principle of improper drug action.

Secondary, Variable Diseases

These diseases are more difficult to identify as this must be done by means of the specific symptoms of the patient. This is the basis for homeopathic prescribing proper (prescribing for the constant diseases is more properly termed ‘homotonic’ prescribing’). However, since the secondary, variable diseases are derived from the primary, constant diseases, treating the primary diseases often removes certain secondary diseases at the same time. The homeopathic prescribing based on the symptoms, disease expressions of the patient, is mostly used in acute situations when it is relatively easy to ascertain the secondary disease being expressed.

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