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Companion Animal Practice
Common cranial nerve disorders in dogs and cats
  1. Jacques Penderis

    Jacques Penderis graduated from the University of Pretoria (Onderstepoort) in South Africa in 1993. After a spell in small animal practice, he completed an internship at the Royal Veterinary College and a residency in neurology at Glasgow. In 1998, he moved to the Animal Health Trust (AHT), where he latterly worked as head of the neurology/ neurosurgery unit. He is currently studying for a PhD at Cambridge, after which he will return to the AHT to develop a genetic and molecular neurology research programme. He is a diplomate of the European College of Veterinary Neurology and an RCVS and European recognised specialist in neurology.

2. CN V and CN VII


LESIONS affecting the trigeminal (CN V) and facial (CN VII) nerves often appear similar on initial presentation but proper evaluation will allow differentiation between the two. Disorders of the trigeminal nerve are usually associated with central lesions (apart from mandibular paralysis or ‘dropped jaw’). Disorders of the facial nerve are common in clinical practice and it is important to identify whether these are due to idiopathic facial nerve paralysis, are occurring secondarily to an inner or middle ear lesion or are due to a more central lesion. This article discusses the assessment of the trigeminal and facial nerves and details their common disorders. In the light of the complex components of CN V and CN VII, only the clinically relevant innervations of the two are considered.

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