LARYNGEAL HYPERESTHESIA. CONVULSIVE 

 COUGH. 



Convulsive cough with visible lesions — without. Excitants, cold air, or 

 water, rough or dusty food, irritant agents inhaled or swallowed. Treat- 

 ment, hygienic, nerve sedative, expectorant, tonics, Muriate of ammonia, 

 Sulphur dioxide, silver solution, ferric chloride, alum, derivatives, elimina- 

 tion, aromatic, dietetic. 



The chronic or paroxysmal cough may often be traced to the 

 presence of tumor, ulcer, local inflammation, or parasite, but in 

 some instances no local trouble is recognizable, the general health 

 remains good, and yet the throat is abnormally sensitive and a 

 cough or fit of coughing may be roused by pas.sing into the cold 

 air from a warm stable, by cold water in drinking, by inhaling 

 irritant gas, by the passage of rough or fibrous food, or by 

 handling the larnyx. There is undoubtedly a hyperaesthesia of 

 the larnyx and the horse and dog as being more exposed to severe 

 demands on the physical and nervous systems are especially liable 

 to suffer. 



Treatment must be adapted to the conditions. Over- work, 

 damp unhealthy buildings, and all appreciable health depressing 

 causes must be corrected, and a course of iron and nux vomica 

 may be tried. Borax, bromide of potassium, and extract of hyos- 

 cyamus, made into an electuary with molasses or honey may be 

 smeared upon the molars four or five times a day. In obstinate 

 cases the inhalation of the fumes of burning salammoniac or sul- 

 phur, or the direct application to the larnyx of dilute solutions 

 of silver nitrate, ferric chloride, or alum may benefit. The throat 

 may be blistered by cantharides or mustard. Care should be 

 taken to keep the functions of bowels and kidneys normally ac- 

 tive, to protect the patient against cold and damp, and to give nu- 

 tritive but non-stimulating and easily digested food, as for the hor.se, 

 bran mashes, roots, grass or scalded hay, and for the dog pulped 

 flesh, soup and mush. Sometimes benefit can be obtained from 

 the vegetable aromatics and stimulants as eucalyptol, tar, turpen- 

 tine, balsams of Tolu and Peru, tincture of anise, fennel, etc. 



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