Seven cases of idiopathic Horner's Syndrome in the Collie are described. Five males and two females presented with unilateral miosis, ptosis of the upper eyelid, enophthalmos and protrusion of the third eyelid. Thorough examination, pharmacological testing with phenylephrine, complete blood counts and radiography of the tympanic bullae and thorax were performed. The etiology was not identified in any of the cases. Clinical signs improved with pharmacologic testing within 20-40 min. In five dogs, total resolution of clinical signs was observed at 4 and 16 weeks after their initial appearance. Pharmacological testing suggested that the deficit could be at the preganglionic neuron.
A 3-year-old, female, black and tan Dachshund was referred with visual impairment, bilateral anterior and posterior uveitis, poliosis, and generalized dermal depigmentation. Complete blood counts and biochemical parameters, including T3 and T4, were normal. The skin biopsy showed lichenoid dermatoses with dermal infiltration of histiocytes and lymphocytes suggesting uveodermatological syndrome. Medical treatment was initiated with oral prednisone and azathioprine, and topical prednisolone and atropine. The clinical signs improved, vision was retained, and the skin began to repigment 2 months following the initiation of therapy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.