Magnesia phos. is best known for its spasmodic conditions and neuralgias. The pains: are very violent and may affect any nerve. A pain localizes itself in a nerve and becomes worse and worse, sometimes coming in paroxysms, but becoming so violent that the patient becomes frantic. The pains are ameliorated by heat and pressure. The patient feels better in a warm place; and his neuralgias are also better, he is miserable, and his pains are brought on when he becomes cold or is in a cold place. Pains are brought on from riding in the cold, and in cold, damp weather. Exposure for a long time to cold winds causes neuralgia of the face, The pains are felt everywhere. Pain in the bowels, enteralgias, cramps in the stomach and bowels, with the same modalities. Pains in the spinal cord under the same rule - amelioration from heat. There are times when a nerve, in which there is considerable pain, becomes sensitive to pressure, becomes sore. The spinal cord becomes sore. Convulsions, with stiffness of the limbs. Convulsions in adults or children, followed by extreme sensitiveness to touch, to wind, to noise, to excitement, to everything. Such convulsions, as children have during dentition. Colic; three months'colic, cramps, bilious colic. But the special feature is its power to debilitate, to cause irritation of the nerves and muscles. Cramps from prolonged exertion. Stiffness numbness, awkwardness and deadness of a nerve from prolonged exertion. Fingers: Thus it applies to long use of the hands and fingers in writing, and gives a fair sample of writer's cramp. It is especially useful in the cramps that come in the fingers, from writing, playing instruments and piano practice. Pianists suddenly break down, with stiffness of the fingers, after several hours' labor every day for years. The fingers give out. In playing the harp a cramp comes on and the fingers cannot perform their use. Other parts are affected in the same way from prolonged exertion. A laborer's hand will sometimes cramp and become almost useless. As soon as he undertakes to do that particular thing his hand cramps and he clutches the implement or loses hold. The carpenter after prolonged use of a tool has a cramp. This is a strong feature of the remedy in all sorts of over-exertion. Violent cramps in dysentery and cholera morbus, that make him scream out. Twitching of the muscles all over the body, as in cholera. It was Schüessler's main remedy for chorea, but we can only use it by its proving. Schüessler prescribed it in all nervous conditions, but its proving justifies its use in neuralgia ameliorated by heat and pressure, cramps and twitchings. Shooting pains along the nerves, but these are not so common as violent pains in paroxysms - a tearing pain as if the nerve were inflamed and put on a stretch. Shaking as in paralysis agitans and complaints resembling it. Amelioration from heat and pressure, and aggravation from cold, cold bathing, cold winds, cold weather, lack of clothing. Pains all over, but more likely pain located in one part.