Natrum mur [Nat-m]
Easily fatigued, weakness from slightest exertion, restlessness of limbs, pain in back and sensitiveness of spine. Sleepless, restless and weak. Headache on walking. Salty taste and repugnance to food. Vision becomes dim after reading, at times only half of object visible. Natrum mur., in its first effects, stimulates the nervous system, causing muscular contractions very much like those induced by galvanism. It also increases the red corpuscles, glandular secretions, digestion, etc. It is from this stimulating action that salt is so effective, when applied locally with friction to weak muscles, etc. Later, however, Natrum mur. exhausts the nerves, diminishes glandular activity, and develops asthenia and anaemia with emaciation. The skin is dry, harsh and sallow; mucous membranes are dry, cracked and glazed, with smarting and rawness, or with scanty, corroding discharges. Great complaints are made that the mouth is dry, when in reality the annoyance arises from the stickiness of the secretions; they are not normally fluid. Now, from this atonic effect of sat, we observe spinal neurasthenia. The small of the back feels paralyzed, especially in the morning, on rising. Back feels as if broken. Legs weak, trembling; worse in the morning. Feet heavy as lead. With all this, it may readily occur that the bladder becomes weak; troublesome, dribbling of urine after a normal stool. And we may admit this vesical symptom as a concomitant of spinal weakness, even though the prover had no such association, because such a combination is quite in keeping with the genius of the remedy. We may regard both spinal and cystic atony as a part of a general tendency in salt to produce exhaustion, hence not a symptom of paralysis, but rather of neurasthenia.
Spinal irritation alternating with offensive foot-sweat. Spinal irritation of children depending on worms (Natr. phos.), markedly aggravated at the time of the new moon. Spinal irritation with stiffness of nape of the neck and headache. Weak back and paralyzed feeling in lower extremities. Burning in back, constant aching in centre of the back. Coccyx painful. Patient is very sensitive to the least noise, has rough and yellow finger-nails, icy-cold feet even in bed. Unhealthy skin, every little injury suppurates. Feels better from warmth in general.
Kali phos [Kali-p]
Neurasthenia, especially from sexual excess, characterized by severe spinal irritation.
Calcarea fluor [Calc-f]
Backache simulating spinal irritation, with weak, dragging, down-bearing pain. Bowels confined.