Description    Neuropathy, particularly laryngeal neuropathy, is a common presentation of chronic lead toxicity in horses; more severe signs can occur following acute exposure to large amounts of lead.
Species   Equine
Signs   Abnormal anal, perineal, tail reflexes, Abnormal behavior, aggression, changing habits, Abnormal proprioceptive positioning, Abnormal upper airway breathing sounds, Agalactia, Anorexia, Ataxia, Blindness, Change in voice, Circling, Colic, Diarrhea, Difficulty in prehending or chewing food, Dryness of skin or hair, Dullness, Dysmetria, Dysphagia, Dyspnea, Esophageal obstruction, Excitement, Exercise intolerance, Forelimb lameness, Forelimb swelling, Generalized lameness or stiffness, Generalized weakness, Head pressing, Head shaking, Head, face, ears, jaw weakness, droop, Hindlimb lameness, Hindlimb swelling, Hyperesthesia, Inability to stand, Increased respiratory rate, Ingesta in nasal passage, Lack of growth or weight gain, Mucoid nasal discharge, Muscle hypotonia, Pale, Ptosis, Rough hair coat, Seizures or syncope, Strabismus, Sudden death, Sweating, Tetraparesis, Tongue weakness, Trembling, Tremor, Underweight, poor condition, thin, emaciated, unthriftiness, ill thrift, Vomiting or regurgitation, Weight loss
References   Dawson DR. Toxins and Adverse Drug Reactions Affecting the Equine Nervous System. Vet Clin N A Eq Pract 2011;27:507 [Web Reference]
Puschner B. Lead toxicosis in the horse: A review. Eq Vet Educ 2010;22:526 [Web Reference]
Saulez MN. Lead poisoning: Any more lurking around? Eq Vet Educ 2010;22:187 [Web Reference]
Allen KJ. Laryngeal paralysis secondary to lead toxicosis. Eq Vet Educ 2010;22:182 [Web Reference]
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