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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Itching of skin, particularly lumbar region and hips; rubbing causes an eruption of papules, about the size of lentils, and of the color of the skin,
After going to bed, itching here and there, and lumps, similar to hives, raise up; scratching relieves itching but is followed by burning; could not sleep,
Apis Mel Apis removed hives.
Burning stinging lump, like hives, on second joint of ring finger,
Pimples on left natis, with a broad erythematous base (one hundred and forty-fifth day),
Pimple on left leg, itching burning; loss of appetite,
Itching of small pimples near right ear (one hundred and first day),
Small, round reddish papules about the tendo Achilles, and later, on lower limbs, mostly in bends of joints, itching terribly,
Sepia Sepia aggravated, but finally relieved, eruption about joints.
Itching about mouth, neck; vesicles form; pimples like nettlerash,
Itching about the joints, elbows, knees; at same time itching of right external ear; vesicles form,≡ more ...