NEURALGIAS. 305 
IV. 
NEURALGIAS. 
Pains situated along the course of nerves most commonly result from 
congestion, compression or inflammation of these organs; but sometimes 
they show themselves without any apparent alteration having taken place in 
the nerves. Neuralgias then represent a syndrome related to several pro- 
“cesses ; some well known, with manifest lesions of the painful nerve ; others 
of nature yet unknown. Hence, the division into neuritic-neuraleias and 
neuroses-neuralgias. In animals, more or less acute pains, due to nervous 
lesion, are commonly observed. By analogy to what takes place in man, 
animals are also subjects to neuroses-neuralgias. The facial neuralia would 
‘produce a kind of “symptomatic ophthalmia with redness, tears flowing 
-and photophobia, a little nasal discharge and ptyalism. The horse has 
the eyes staring and brilliant, he moves his ears, lays them back as a 
vicious animal, bends his head towards his leg, and manifests his pains by 
groans analogous to that seen in animals on which a twitch is applied, 
-and by kicks against his stall” (Renner). Sciatic or femoro-popliteal 
neuralgia is accompained “ by shakings and lameness of the affected leg ; 
‘moving and exercise increase the pains, specially when the foot rests on 
‘the ground..... Sometimes, as characteristic: in animals,.tremblings of 
‘muscles have been observed, giving rise to access of pains; also weakness 
-of the leg, which is half paralyzed..... * undel). Cervico-brachial 
neuralgia is accompanied by a continued or intermittent lameness with pain- 
ful spots on the course of the nerves. Descriptions have been given of a 
cervico-occipital neuralgia, which may be mistaken with torticolis—a dorso- 
intercostal neuralgia, with pains during respiration ;—a lumbo-abdominal 
neuralgia, with pains in the loins. Zundel speaks also of neuralgias of 
the mamme and of the testicles. Mller has several times observed the 
hyperesthesia of some cutaneous regions, without material lesions or 
marked alterations. He considers as neuralgic in nature the intermittent 
hyperesthesia of the poll and of the withers, brought on by frictions of 
the harness and which is increased by the slightest pressure. He says 
he has observed frequently neuralgias in the surface of distribution of 
the occipital nerve. ; 
In some of ‘the cases of femoro-popliteal or sciatic neuralgia related in 
horses, cattle, goats, the nature of the affection is at least doubtful. The 
same can be said of the brachial neuralgia of Cantoni and of most: of the 
observations of this kind. 
It goes of itself that the diagnosis of “neuralgia” must be made in 
