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Materia Medica Viva Volume 7 – page 1523

CANTHARIS
Cantharis vesicator, Lytta vesicator. Blister-beetle, ‘Spanish fly’.
N.O. Coleoptera.
Tincture or trituration of live insects.
THE ESSENTIAL FEATURES
As is well known from our materia medica, remedies generally prefer a specific system, organ or area of the body and express their action there, although their action is by no means restricted to this location. Cantharis’ preference is definitely the urogenital system, and it usually involves in its action both the urinary and the sexual spheres simultaneously. In Cantharis cases, when we have an inflammation of the urinary system, especially of the urethra and bladder, we see at the same time an excitation of the sexual drive. The more the inflammation of the urinary tract the more the sexual excitation, which can reach such a degree that it almost assumes the form of sexual frenzy.
The first key-note of this remedy is an excessive burning sensation, a burning pain which runs throughout the picture. It has been shown by external applications of Cantharis, as well as by provings where the remedy was orally taken, that the remedy produces such burning of the mucous membranes and also on the skin. Consequently, it has been of great use in the treatment of bums and scalds, even when they are very severe.
We should, therefore, consider this remedy in all cases where excessive burning pain before, during and after micturition is the prominent characteristic, and it is more disturbing and agonising to the patient than any other symptom. This is especially the case for inflammations of the urinary tract but also when other pathological