As stated by Master Hahnemann, in Aphorism 73 of Organon of Medicine, about telluric and meteoric changes which results in turmoil inside the human body, a unit of the universe, constituted by cells. The body represents the earth while the mind represents the universe. This turmoil in mental exercise produces the morbid disease, as sensitivity gets altered and when it occurs in mass population, it becomes an epidemic or a pandemic disease.
Homoeopathic medicines possess the capability to treat such turmoil as they help to unpolarize the polarized waves. The similimum may be from the mineral kingdom like Arsenicum album, Phosphorus, Sulphur, Kalium phosphoricum, Natrum carbonicum, Zincum metallicum or from animal group such as Lac defloratum, Sepia or from family of plants like Aconitum napellus, Belladonna, Lycopodium clavatum. On applying, these medicines can un-polarize the energy and can save the body from their bad effects or in other words, theses medicines can de-channelize the adverse energy or can produce resistance against these changes.
For complete cure, the treatment must be done as per the stage of the disease and the medicine must be selected on the basis of symptom similarity.
During the Primary Infection or Incubation Period:
Symptoms include sneezing, irritation in the nose, slight fever, irritation in the throat and loss of taste and smell, which indicates that the chosen remedy must be capable enough to act on nose, buccal cavity, throat and larynx.
First Stage Medicines:
Aconitum napellus,Alumina,Arsenicum album, Belladonna, Causticum, Dulcamara, Ignatia amara, Kalium bichromicum, Lycopodium clavatum, Natrium muriaticum, Nux vomica, Ranunculus bulbosus, Sambucus nigra, Sulphur, Squilla maritima.
During the Secondary Stage:
Symotoms include dry cough, or cough with slight expectoration, irritation in trachea and bronchioles. The area involved the respiratory tract from the larynx to bronchioles or bronchial trees, which guides towards the selection of similimum.
Second Stage Medicines:
Belladonna, Bromium, Bryonia alba, Camphor, Calcarea carbonicum, Causticum, Chelidonium majus, Cuprum metallicum, Drosera rotundifolia, Ignatia amara, Phosphorus, Lycopodium clavatum, Kalium bichromicum, Kalium carbonicum, Kalium iodatum, Lachesis mutus, Lobelia inflata, Medorrhinum, Nux vomica, Natrium muriaticum, Pulsatilla nigricans, Ranunculus bulbosus, Sanguinaria canadensis, Sepia, Stannum metallicum, Sulphur, Tuberculinum, Thuja occidentalis.
During the Tertiary Stage:
Presents with alveolar damage, septicaemia or other emergencies, severe respiratory distress syndrome, rattling and wheezing in chest, fibrosis of lungs, pneumonia, emphysema and atelectasis. In this stage,the patient may require ventilators.