These questions should be investigated by Classical Homoeopaths. Then they must study how the stronger similar diseases over power the similar weaker diseases. Dissimilar diseases do not cure as they form active, latent or dormant layers within the human organism. In order to understand this subject one must look at the processes of similar and dissimilar natural and medicinal diseases. To make this clear, we will consider the following.
Similar remedies cure because a similars have the natural power to remove weaker similar disease.
The primary action of a potentized remedy has more essential power then a natural disease and thus replaces it in the human organism. The secondary action of the vital force then removes the natural disease as well as the homoeopathic remedy during the process of cure. Two dissimilar diseases can not cure each other. Dissimilar diseases can only repel, suspend or combine producing complex diseases states in layers within the constitution. Just because there are layers in the human organism does not mean that each 'layer' must be treated routinely in some mechanical manner.