Below are the main rubriks (i.e strongest indications or symptoms) of Causticum in traditional homeopathic usage, not reviewed by the FDA.
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 ...