Arnica produces a restless state due to the soreness, to the bruised feeling, that is much like Rhus-tox.
Kent again describes the restlessness with his characteristic vivacity: "If you watch an Arnica patient in order to get the external manifestations of his state, you will see him turning and moving. You will at once ask yourself why he is restless and if you compare remedies in your mind, you will say, He is like Rhus-tox, he stays in a place for a little while and then he moves. No matter if he is only semi-conscious, you will see him make a little turn, part way over, and then a little further over, and so on, until he is over on the other side.. Then he commences again, and will shift a little and a little, and so he turns from side to side. The question is why does he move so, why is he restless? It is an important matter to solve.
We notice the awful anxiety of the Arsenicum patient that keeps him moving all the time. We notice the painful uneasiness felt all over the body with the Rhus-tox patient so he cannot keep still.
The Arnica patient is so sore that he can lie on one part only a little while, and then he must get off that part or to the other side. So if we ask him,"why do you move so?" he will tell us that the bed feels hard.
That is one way of telling that the body is sore The soreness
increases the longer he lies, and becomes so great that he is forced to move. With Rhus- tox the uneasiness passes off after moving, and with Arnica the soreness passes off if he gets to a new place."
We may find the symptom of lameness, soreness, of feeling bruised and the feeling that the bed is hard, full of bumps, in any chronic disease requiring Arnica but especially in rheumatic or arthritic conditions.
Aggravation of pains in the evening and night in bed, from movement and from noise. Aggravation from lying on a hard bed. Damp cold aggravates Amelioration when lying with head in a low position.
Clonic convulsions from commotion of the brain; Clonic convulsions after drugs; Clonic convulsions from head injuries. Trembling alternating with convulsive movements of limbs. Traumatic clonic convulsions that have tetanic rigidity. Twitchings as from electricity. Epilepsy after injuries to the head.
If you see a case after pregnancy where the recovery is slow with a lot of symptomatology, especially if the labour was very strenuous for the woman, then Arnica will probably take the consequences and bring a
speedy recovery. Neonatorum asphyxia.