RHEUMATISM.
—A disease which affects the muscles or joints, wandering from one part of the body to another. It affects nearly all animals, including the horse, ox, dog, hog, and sheep. Rheumatism of the muscles is usually due to catching cold, while rheumatism of the joints is often due to some micro-organism.
Stiffness, which usually comes on suddenly, is a characteristic symptom. The animal may be able to move only with great difficulty. The joints may crack when moved, the affected muscles are hard and painful to touch, the soreness may shift from one part to another; and the animal sometimes makes a quick recovery, only to be followed by another attack in a short time or perhaps never again. These symptoms may be associated with a rise in body temperature and increased pulse. The disease may last for a long time or only for a few days. In chronic cases the muscles decrease in size in the parts affected. In the dog it is very painful when caused to move and he will howl, or even howl when he thinks he is going to be moved. In sheep it seldom occurs except in young lambs. Pigs are often affected in the legs or back, sometimes becoming paralyzed in the hind legs.
Rheumatism of the Joints
usually shows very rapid swelling, increased heat, and is very painful. The animal is often so lame that it will not put any weight on the foot of the affected limb.
For horses and cows, treatment consists of local applications of alcohol 50 parts and oil of mustard 1 part, rubbing it in well; or spirits of camphor. Give at the same time internally 1 teaspoonful of potassium iodide twice daily and not to exceed 12 doses; or salicylate of soda 4 tablespoonfuls daily. Keep the animal warm and in a well-ventilated stable. Pigs or dogs, according to size, should be given from 4 to 16 grains of salol, also using the above local applications.