Below are the main rubriks (i.e strongest indications or symptoms) of Nat Mur in traditional homeopathic usage, not approved by the FDA.
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Palms hot and perspiring
Arms and legs, but especially knees, feel weak
Dryness and cracking about finger-nails
Numbness and tingling in fingers and lower extremities
Ankles weak and turn easily
Painful contraction of hamstring ( Causticum Caust.) Cracking in joints on motion
Coldness of legs with congestion to head, chest, and stomach.≡ more ...