Introduction
The theory of miasms is one of the most distinctive and controversial aspects of homeopathy. Hahnemann proposed that the majority of chronic diseases arise from three fundamental causes or miasms — Psora, Sycosis, and Syphilis — which are inherited predispositions to disease.
The Three Miasms
Psora is the oldest and most universal miasm, corresponding to the itch disease. It is the miasm of deficiency and is the background for most chronic diseases. Sycosis corresponds to the fig wart disease (gonorrhea) and is the miasm of excess. Syphilis, the most destructive miasm, corresponds to syphilis and is the miasm of destruction.
Anti-Miasmatic Treatment
Each miasm has specific remedies that are used for its treatment. Sulphur is the primary anti-psoric remedy. Thuja is the primary anti-sycotic remedy. Mercurius is the primary anti-syphilitic remedy.
Conclusion
The theory of miasms provides a framework for understanding the inherited susceptibility to chronic disease and guides the selection of deep-acting constitutional treatment.