Chest
They suffer from asthmatic respiration as a consequence of gaseous distension of the stomach. There is a feeling as if there is an iron band around the chest or a very heavy stone in the middle of the chest. Desires to take a deep breath, which aggravates the dyspnea. The dyspnea is also worse if there are many people in the room.
There may be intense palpitations, especially when the patient lies on the right side. The patient often describes the palpitation as so severe that he feels as if his heart will jump out of position. In some cases the palpitations are relieved by hard pressure on the sternum. Anxiety felt in heart region after eating at night. Pain in the heart that makes breathing almost impossible. Pains of angina pectoris, worse at night.
Back
There is often heaviness in the lumbosacral region which is aggravated by stool, but ameliorated by standing. There can be a similar heaviness in the coccyx with these same modalities. Pain in the lumbar region which is ameliorated by walking and aggravated by sitting or rising from a seat. There can also be back pain which is aggravated by flatulence. Chills or coldness extending upwards after eating. Pain in lumbar region or sacrum or coccyx, worse sitting, ameliorated by standing.
Extremities
As a general characteristic, Argentum nitricum has incoordination of the extremities, especially the lower extremities. It is one of the main remedies for ataxia. There can be weakness of the extremities, often the lower extremities, in the afternoon. Heaviness of the limbs occurs. As with the weakness of the legs, one also finds a heaviness of the legs occuring in the afternoon. In severe neurological disorders a painless paralysis of the lower extremities can be found.
A special area of weakness in this remedy is the forearms; heaviness of the forearms is a strong characteristic of Argentum nitricum. There is severe numbness of the forearms during the night in sleep, with intolerance of any touch; even the touch of clothing aggravates. Numbness of the extremities.
Numbness of the feet.
There can be great coldness of all the extremities. Coldness of the forearms during the menses can be considered a keynote of Argentum nitricum in spite of the fact that this is a warm-blooded remedy. Coldness of the shoulder after eating. Sometimes the legs become cold and blue.
Trembling of the extremities. Great restlessness that can eventuate in the violent motions that are characteristic of such diseases as chorea. Many times tremendous restlessness precedes convulsions. Trembling of the whole body periodically.