Idiopathic Horner’s syndrome in collie dogs

Abstract

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.

Retrospective analysis of ocular neuropathies in diabetic dogs following cataract surgery

“…Horner's syndrome was defined as exhibiting miosis with at least one additional clinical sign including elevation of the nictitans, ptosis, and/or enophthalmos. All patients diagnosed with Horner's syndrome were confirmed with denervation hypersensitivity testing with topical ocular application of dilute phenylephrine (1%) causing an increase in pupil diameter and retraction of the nictitans . Facial neuropathy was defined to include facial paresis and total paralysis as seen by the decreased or absent ability to blink, respectively.…”

“…All patients diagnosed with Horner's syndrome were confirmed with denervation hypersensitivity testing with topical ocular application of dilute phenylephrine (1%) causing an increase in pupil diameter and retraction of the nictitans. [25][26][27][28] Facial neuropathy was defined to include facial paresis and total paralysis as seen by the decreased or absent ability to blink, respectively. Neurogenic keratoconjunctivitis sicca (NKCS) was defined as an acute onset of clinical signs of dry eye, Schirmer tear test (STT) I result of 0 mm/min and ipsilateral xeromycteria.…”

Acupuncture treatment for idiopathic Horner's syndrome in a dog

“…This condition may be caused by neoplasms, cysts, inflammation, injury, or unknown causes [2,9]. In veterinary medicine, the cardinal signs of Horner's syndrome are miosis, ptosis, enophthalmos, and prolapsed nictitans [3,6]. The important causes of Horner's syndrome in dogs and cats were found to be trauma and optic problems, but the etiology could not be determined in 50% of all cases [6,11].…”

“…The important causes of Horner's syndrome in dogs and cats were found to be trauma and optic problems, but the etiology could not be determined in 50% of all cases [6,11]. Most cases of idiopathic Horner's syndrome are resolved spontaneously in 4 to 8 weeks or more [3,6, 11], but an effective treatment method has never been introduced. This report describes the effect of needle acupuncture (AP) therapy for idiopathic Horner's syndrome in a dog.…”

“…The prominent causes of Horner's syndrome in dogs and cats were found to be trauma and optic problems, but the etiology could not be determined in 50% of all cases [6,11]. The clinical signs of idiopathic Horner's syndrome usually improve in 1 to 2 months after the initial onset [3,6,11]. For the treatment of symptoms, 2.5% phenylephrine or 1.0% epinephrine is usually indicated for Horner's syndrome, but an effective treatment method has never been introduced.…”