Equine Tetanus Symptoms

The early symptoms of equine tetanus are subtle, and early diagnosis is vital if there is to be any chance of successful treatment. The bacteria Clostridium tetani is responsible for tetanus and typically enters into the horse's system through a cut or puncture wound. Symptoms are generally exacerbated by loud sounds, bright light or touch; therefore, putting the horse in a cool, dry, quiet area is best.

  1. Lock-Jaw

    • Tetanus causes the muscles in the horse's jaw to contract so he is unable to open his mouth or swallow any food or water.

    Stiffness

    • A horse suffering from tetanus develops stiffness in the front and rear legs, causing him to position himself in a sawhorse-like stance. He will stretch out his neck with his head extended. Once the stiffness progresses to paralysis, especially of the respiratory muscles, the disease is fatal.

    Spasms

    • As tetanus progresses, the horse will suffer from body spasms. The trembling is often quite violent and involves the entire body as a response to sudden movement or noise.

    Protrusion of the Third Eyelid

    • As the horse raises his head, the third eyelid closes across the eye. This is an early symptom and should be brought to the attention of a veterinarian immediately. The protrusion of the third eyelid, along with other symptoms is considered a positive diagnosis of tetanus.

    Facial Features

    • The horse's ears become fixed in a pricked position, and the mouth is drawn back due to facial spasms, causing the horse to look anxious.