There are many misconceptions as to what homoeopathy is. Homoeopathy is a system of medicine described by Samuel Hahnemann a German medical practitioner and translator of medical texts. His readings and observations showed that medicines did not react in the same manner in every person, we all know that with conventional medications a small percentage of people taking any particular medication develop ‘side-effects’ others don’t. He also noted that the medicines used in many disorders in fact produced similar symptoms in healthy persons that repeatedly took the medication. This latter observation led to the use of the term homoeopathy derived from the Greek roots ὅμοιος hómoios, "-like" and πάθος páthos, "suffering").
What he realized was that not everybody suffering a particular disease experienced exactly the same signs and symptoms. He also observed that in some instances a person suffering a disease would have alterations in their mental or emotional disposition, to him these changes in disposition formed part of the symptoms of the disease. For example not everybody suffering from a headache have the same symptoms, some experience the pain in particular parts of the head, others find bright light a problem, some want to be left alone others want company. From a homoeopathic point of view all of these different headaches require different medications.
His instructions to his followers were to study disease and diagnosis, to study the effects of medicines and very importantly to study how any particular medication reacted in relation to a specific disease.