Below are the main rubriks (i.e strongest indications or symptoms) of Arsenicum Album in traditional homeopathic usage, not approved by the FDA.
BACK AND NECK
Back and neck
Pain in the back as from a bruise, and over the scapulae as if beaten (aft. 4 d.).
In the nape of the neck, stiffness, as if bruised or from overlifting, with a like pain above the hips; at night and in the morning.
In the neck, tensive stiffness.
Distortion of the cervical muscles.
Swelling of the external neck, without pain.
The artery of the left side of the neck swelled out extraordinarily, on stooping.
Itching on the neck, below the jaw.
Colorless, smarting eruption all around the neck, on the shoulders and in the sides.
Lack of strength in the small of the back.
Painful stiffness in the small of the back, all the day.
Pain in the small of the back as from a bruise.
Pain in the back, with restlessness and anxiety.
Stiffness in the spine, extending up from the coccyx.
Drawing pain in the back, in the forenoon (aft. 6 d.).
Drawing, up and down the back.
Drawing pain between the scapulae, compelling him to lie down.
Drawing pain in the back, from the small of the back into the shoulders, with stitches in the sides, while flatus moves about in the abdomen, pressing upward; then eructation and relief.
Strongly clucking motion in the muscles of the left side of the back, only when lying on the right side (aft. 3 h.).≡ more ...