Below are the main rubriks (i.e strongest indications or symptoms) of Causticum in traditional homeopathic usage, not approved by the FDA.
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Roaring, or buzzing in the ears.
Words and steps re-echo in the ears; hears with difficulty.
Stitches in right ear, paroxysmal, and in rapid succession.
Feeling of obstruction in ears, with offensive purulent discharge.
Herpes on the ear-lobe.
Meatus dry, with a little brown wax.≡ more ...