Below are the main rubriks (i.e strongest indications or symptoms) of Causticum in traditional homeopathic usage, not approved by the FDA.
Otalgia, with pressive pain outwards, as if the inner parts were pressed out.
Shootings, and pain, as of excoriation, in the ears.
Swelling of the ears, externally, with shooting and burning pain.
Stitches in the (r.) ear.
Discharge of fetid pus from the ear.
Itching in the lobe of the ear, as if from a tetter.
Words spoken and steps re-echo in the ear.
Tinkling in the ears.
Loud resounding noises in the ear, with hardness of hearing.
Rumbling and buzzing, rolling and murmuring in the ears, and in the head.
Sensation of stoppage in the ears.≡ more ...