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