This is indicated by difficult expiration, most marked at the flank, where the gradual rise there is interrupted by a momentary check, and then resumed with a kind of jerk. Inspiration is performed with ease and steadiness. There is generally a short, hollow, characteristic cough.

Medical treatment is not of much avail in "broken wind," but relief can be afforded by attention to feeding and watering. The horse should be fed in small quantities, and frequently, and water ought to be given in the same way.