In the Hahnemannian pathology of chronic diseases, besides psora, two other miasms, i. e. syphilis and sycosis figure as etiological factors. The importance and extent of syphilis as a cause of a distinct miasm does not differ as conceived by Hahnemann from that accepted by modern pathology, but sycosis assumes a distinctive importance peculiar to homoeopathy.

Sycosis is the suppression of the gonorrhceal poison in the system. Its main local manifestation is the production of figwarts around the genital region, but its later constitutional symptoms are not confined to any part of the. organism but are a general deviation of health.

Hahnemann distinguishes two kinds of gonorrhoea - one comparatively innocent - a urethral, catarrhal inflammation, and the other the sycotic form. In regard to the more common and comparatively innocent form, he says in his "Chronic Diseases": "The miasm of the other common gonorrhoeas seems not to penetrate the whole organism, but only to locally stimulate the urinary organs. They yield either to a dose of one drop of fresh parsley-juice, when this is indicated by a frequent urgency to urinate, or a small dose of Cannabis or Cantharis, or of Copaiva, according to their different constitution and the other ailments attending it. These should, however, be always used in the higher and highest dynamizations, unless a psora, slumbering in the body of the patient, has been developed by means of a strongly-affecting, irritating or weakening, old-school treatment. In such a case, frequently, secondary gonorrhoeas remain, which can only be cured by anti-psoric treatment".

The sycotic form of gonorrhoea differs in being a much more serious matter. Hahnemann describes it as follows: "The discharge is from the beginning thickish, like pus; micturition is less difficult, but the body of the penis swollen somewhat hard; the penis is also, in some cases, covered on the back with glandular tubercles, and very painful to the touch".

The characteristic features of sycosis are the wartlike, cauliflower excresences around the genitals, soft, spongy, bleeding easily, recurring when violently removed, frequently emitting a specific, fetid fluid.

All heroic, external treatment is forbidden, tending to produce the sycotic diathesis; only the external use of Thuja is permitted. For internal treatment, Thuja is the great anti-sycotic.

The violent suppression of a sycotic, urethral discharge is often followed by chronic suffering, which is characterized by peculiar symptoms and conditions, among which the following have frequently been observed: