Below are the main rubriks (i.e strongest indications or symptoms) of Natrum Carbonicum in traditional homeopathic usage, not approved by the FDA.
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BACK AND NECK
Back and neck
Stitches in small of back while sitting.
Tingling (formication) in back.
Cervical glands swollen; also goitre with pressing.
Stiffness of the neck.
Cracking in cervical vertebrae when moving head.≡ more ...