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 right ear burns and itches so intolerably he has to scratch it until it bleeds,
Sensation (in ears) as of water dropping from a height into a long narrow vessel, while lying down,
Fulness in both ears (one hundredth day),
Fulness in ear (one hundred and thirty-seventh day),
Full feeling in interval ear, in evening (ninety-eighth day),
Dull aching in right meatus auditorius (one hundred and fifty-fifth day),
Tickling from middle ear into Eustachian tube,
Great itching in right meatus auditorius (ninety-sixth day),
Imagines he hears footsteps in next room,≡ more ...