Homeopathic therapeutics for Psoriasis symptoms from ABC Manual of Materia Medica and Therapeutics by G H Clarke….

Arsenic, 54.

Chrysophanic acid, locally, thirty grains to the ounce of petrolatum, is almost a specific.

Mercury, 131.

Manganese, 148.

Thyroid gland, increase from small daily dose.

George Hardy Clark
Clark, George H. (George Hardy) 1860-1941 was the author of: Homeopathic Treatment of Asthenopia; Lee and Clark's Cough and expectoration : a repertorial index of their symptoms; The A B C Manual of Materia Medica and Therapeutics; A system for the care and training of children; The Black Plague and Its Control.