This remedy, made from quicklime (calcium oxide) and potassium bisulphate, was invented by Samuel Hahnemann himself. It is especially good for conditions which involve local paralysis, burning sensations, rawness, soreness or skin eruptions which have been suppressed by steroids, etc.
Constitutional Indications
Those who derive most benefit from Causticum tend to be dark-haired, dark-eyed, sallow-skinned, weak and rather rigid in their thinking. Children who respond well to Causticum are often very excitable and outgoing, thoroughly involved in everything going on around them and deeply concerned about injustice.