Below are the main rubriks (i.e strongest indications or symptoms) of Acid Phos in traditional homeopathic usage, not approved by the FDA.
BACK AND NECK
Back and neck
In the dorsal vertebrae, a painful drawing, as if they were beaten in two, most while sitting.
In the shoulder-joint, drawing and beating.
On the neck, in front and on the sides, a pressure.
Pinching pain on a small spot of the neck.
Painful pressure on the left side of the neck, as if it would get sore on the inside, but it is not aggravated either by swallowing or by talking.
Spasmodic drawing in the right cervical muscles, extending even to the eye, when turning the head.
The cervical muscles on the right side are very painful.
Painful stiffness of the left cervical muscles, the turgidity extends into the head.
On the coccyx an itching stitch.
Fine stitches on the coccyx and on the sternum.
In the small of the back a vivid pain, like drawing and pressing, occasionally tearing, only distinctly perceptible while standing.
Intermitting, quickly drawing, pressive pain in the sacrum, most while standing, less when walking; it goes off through pressing upon it, through sitting down and bending forward.
Intermittent tearing in the sacrum, after rising from stooping down; while standing still, it quietly draws in jerks.
Burning pain in a spot just above the sacrum.
Severe stitch in the sacrum, when rising after crouching down.
Itching and perspiration in the back.
Tearing pain in the back at night.
Pinching pain in the middle of the spine.
A stitch in the loins when lifting something, this continued while sitting, but at once disappeared on moving.
Stitches in the renal regions.
Small, violent, jerking stitches in the middle of the spine.
Erosive itching about the lumbar vertebrae and in other parts of the trunk, also on the thigh; he has to scratch.
Red pimples on the back, the chest and the nape, especially above the scapulae, chiefly in the evening, less visible in the morning, only troublesome as the clothes rub and touch them; they last 14 days.
Eruption on the scapula, without itching, only painful when touching it.
On the left scapula, a painful tearing, while sitting with the body bent forward.
Concealed drawing and pressure on the bones like gnawing, under the apex of the scapula.
In the nape a drawing, shooting pressure, going imperceptibly toward the occiput and disappearing there.
Twitching sensation in the nape, while at rest, but more frequently yet when raising the head.
Feeling of stiffness in the nape, while at rest; it goes off by moving.
Burning sore pain on the side on the nape.
Swelling of an axillary gland, which passes off of itself.
Rheumatic, paralytic pain in the right shoulder-joint.
Tearing in the top of the shoulder and in the left hand.
Squeezing pressure on the top of the right shoulder.
Furuncle on the right shoulder.≡ more ...