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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Dulness in head and at root of nose.
Fulness in head; flushes of heat, afterwards sweat.
Fulness in forehead, over eyes; in morning; while studying; With cutting in r. temple.
Sharp cutting r. side of head with, at times, dull aching over eyes.≡ more ...