_Definition._ A complex disorder manifested by hypertrophy of the
thyroid, excessive bulging of the eye balls out of the orbits, cardiac
palpitations or tardy heart action and other nervous or trophic
disorders.
Cadiot records a case in a horse, in low condition, with painful
œdematous swelling of one fore foot, and swellings in other parts of the
body, great enlargement of the left lobe of the thyroid, tumultuous
heart action with beats 70 to 80 per minute, and strong visible
pulsations in the superficial arteries. There was no leukæmia and no
exophthalmia. The patient died on the third day.
Jeswejenko records that of a four year old English thoroughbred which
after a race showed anorexia, weakness, thirst, rapid pulse,
palpitations, conjunctivitis, enlarged thyroid and after fourteen days
exophthalmia with thyroid pulsations. It died in the fourth week, anæmic
and exhausted. A second case in a 7 year old bitch recovered in three
months under treatment with iodine.
Röder gives the case of a cow with palpitations, abnormally strong
pulsations, thyroid hypertrophy and double intense exophthalmia. This
persisted for four years.