Below are the main rubriks (i.e strongest indications or symptoms) of Nat Mur in traditional homeopathic usage, not approved by the FDA.
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 ...