Below are the main rubriks (i.e strongest indications or symptoms) of Lachesis in traditional homeopathic usage, not approved by the FDA.
BACK AND NECK
Back and neck
Pain in the small of the back, with constipation.
Pain in the os coccygis, when sitting down, feeling as if sitting on something sharp.
Stiff neck, moves jaw with great difficulty, tearing from nape of neck up either side, to top of head.≡ more ...