PARASITES OF THE THROAT.
Leeches. These taken in with the water will sometimes fasten themselves on the walls of the pharnyx or even on the lips of the larnyx, producing cough, sore throat, difficulty of swallowing, bleeding from the nose (or mouth), or dyspnœa. They are to be removed as recommended above under parasites of the nasal chambers.
Œstrus Larva. Bots. In horses and mules the larva of the œstrus sometimes attaches itself to the mucous membrane of the pharynx or even of the larynx producing chronic irritation, cough and even dyspnœa. A chronic sore throat with nasal discharge, occurring in autumn or winter, in the absence of fever or constitutional disorder may be found to depend on these parasites and to recover when these have been removed by the hand.