Below are the main rubriks (i.e strongest indications or symptoms) of Benzoic Acid. in traditional homeopathic usage, not approved by the FDA.
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BACK AND NECK
Stiffness of the neck, but only on one side,
Pressure in the nape of the neck,
Violent itching in the nape of the neck,
Pain in the right side of the back, between the tenth dorsal vertebra and the side,
Pressure upon the spinal column,
Hot burning pain in left kidney, with drawing when stooping, (Neidhard.)
Dull pain in the region of the kidneys,
Sore pain in region of left kidney, (Neidhard.)
Nephritic colic, (Williamson.)
Sense of coldness at the sacrum,
Starting in the loins,
Stiffness in the loins, with pains in the kidneys, (Neidhard.)≡ more ...