Below are the main rubriks (i.e strongest indications or symptoms) of Rhus Tox in traditional homeopathic usage, not approved by the FDA.
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BACK AND NECK
Back and neck
Pains in shoulders and back, with stiffness as from a sprain.
Curvature of the dorsal vertebrae.
Spinal membranes inflamed, even myelitis; from getting wet or sleeping on damp ground.
Pains in small of back, better lying upon something hard.
Stiff neck, with painful tension when moving.≡ more ...