Below are the main rubriks (i.e strongest indications or symptoms) of Natrum Phosphoricum in traditional homeopathic usage, not approved by the FDA.
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Lobe of r. ear burning and itching so intolerably has to scratch it till it bleeds.
Sensation in ears as of water dropping from a height into a long round vessel.
Fulness in ears, aching in r. meatus.
Itching and tickling in (r.) Eustachian tube from middle ear.
Imagines he hears footsteps in next room.≡ more ...