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. 2009 Jun 5:374–418. doi: 10.1016/B978-072160561-6.50021-6

Table 18-32.

Systemic Causes of Adnexal Abnormalities in Horses and Cattle

ABNORMALITY CAUSES IN HORSE CAUSES IN COW
Facial nerve paralysis*

  • Equine herpesvirus

  • Equine protozoal myeloencephalitis

  • Viral encephalitis

  • Infectious meningitis

  • Intracranial abscess/neoplasia

  • Polyneuritis equi

 Listeriosis
Eyelid edema, infiltration, ulcers, alopecia, or crusting

  • African horse sickness

  • Histoplasmosis

  • Mycotic dermatitis

  • Mange

  • Onchocerca cervicalis

  • Pemphigus

  • Urticaria

  • Generalized granulomatous disease

 —
Eyelid protrusion

  • Tetanus

  • Hyperkalemic periodic paralysis

 —
Transient keratoconjunctivitis sicca Strangles (Streptococcus equi) —
*

May lead to decreased tear production, secondary keratoconjunctivitis sicca, secondary corneal ulceration, exposure keratitis, and periorbital muscular atrophy.