Page 516 - The Veterinary Care of the Horse
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        Figure 11.12 Diagram showing the branches of the trigeminal nerve



        Clinical signs

        Some horses and ponies headshake at rest in the stable and field, whilst in others it occurs

        only during exercise. Affected horses and ponies will show some of the following signs:
        •    Repetitive vertical, horizontal or circular movements of the head with a shaking, flicking
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