Etiology. Syniptoiiis. Trealnient. ^99 



in the horse Roder and Gorig each in a cow, and Jewsejenko and Son- 

 nenberg each in a dog Even if all these cases do not exactly con^spond 

 ^Inf rl''* i^^^^^T^^^'" ^ ^^^^^^«^' y^^ a ±'^^^' aiid especially the case 



Etiology. In recent times disease of the thyroids has been 

 Tontl"'^ "' ^'''IT '''''Y'^' ^' ^' ^ primary affection since 

 /LnP.t!^"''''^^ of hyperplasia they secreted more abundantly 

 (hypeithyrea) and perhaps also produced a toxin (dystliyrea') 

 Wnv rl-^f If aterial on circulating in the blood, caused vaso- 

 motoi disturbances (Mobius). According to this view, there- 



fA^r fi" • • ^^*^V'^|^i«/- according to this view, tliere- 



toie, the illnes^s is an intoxication brought about through an 

 abnormal function of the thyroid glands". This theory which 

 as the most adherents is still further supported by the fact 

 that loss of the thyroids causes an exactly opposite clinical 

 picture (cachexia strumipriva). 



Symptoms. The disease is characterized by three cardinal 

 F?^fTh T^"^' '^™"' exophthalmus and tachycaiSa! 

 fnnlril T ^If ^^g'^^^^^^\^?f the thyroids is said to make its 

 appeal ance. In the cases hitherto observed, one or the other 

 or both lobes of the thyroid gland were enlai'ged to twLe t eh' 

 size and more, smooth, of firm consistence ami tense; the en- 

 larged lobe may reach to the middle line, and may extend well 

 backwards Albrecht found on dissection three supplementary 

 glands which were united to the enlarged thyroids ) ^ 



Ihrough exophthalmus (protrusion of the eyeballs) the ex- 

 fhrnHfi./'Tff ^^""''^'^^y staring and anxious. This causes 

 the oiifice of the eye to be opened too widely, and conse- 

 quently the hds close less frequently and incompletely. Be- 

 sides, a flow of tears is noticed, and on raising the head the 



l3hn 'V'f ^^^S^;^".^)^ }^'' movements of the eyeball (Al 

 biecht). Roder and Gong have observed a marked ^strabismus 

 convergens m cows which, however, indicates the presence of 

 an organic brain disease. 



Palpitation of the heart may generally be noticed from a 



the wW'/r7 ^''f'^ Yf* '^^"^"^8- ^^'' ^^f^ «i^^^ «f the chesl or 

 1 1 of +1 ^^ noticeably; sometimes one sees besides a pulsa- 

 tion of the superficial arteries (Cadiot) 



These symptoms are not always present in like degree, 

 the exophthalmus, and still more the palpitation of the hear 

 disappearing altogether temporarily, taie' rapid and paroxis- 

 mal onset of the disease may be accompanied now and then bv 

 othei symptoms, such as timidity, trembling and languor. ^ 



r)it.tTnr*?!!f''*' il^'^'r ' •? r ^PPli^^tions to allay the heart pal- 

 p tation, internally digitalis or narcotic agents may be em- 

 ployed. In obstinate cases partial extirpation of the thvroid 

 glands may be tried, which experience shows has repeatedly 



