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How to Detect Swelling in a Horse's Lymph Nodes

Updated February 21, 2017

The lymphatic system in mammals is the centre of the body's immune system. The factories of the system are the lymph nodes. If the lymph nodes are swollen, it is usually a sign of some type of illness or infection. If you own horses, spotting swollen lymph nodes may be the first sign that you should take your horse to a vet. Since the animal can't tell you something is wrong, knowing what swelling in the lymph nodes looks like is important.

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  1. Observe the horse's stance. Horses with swollen lymph nodes often stand with their necks outstretched, to relieve pressure in the neck area.

  2. Look in the lymph node area on a horse's body. The lymph nodes on a horse are located behind the jaw -- on the throat latch area of the neck -- over the eye sockets -- in the chest area, and the abdominal cavity. Swollen lymph nodes may appear round and hard. The horse may flinch when you touch them.

  3. Take the horse's temperature using a rectal thermometer. The normal range of body temperature for a horse is between 37.2 and 38.3 degrees Celsius. Temperatures higher than this may indicate an infection.

  4. Warning

    Never stand behind a horse when checking lymph nodes or taking a horse's temperature. Many horses respond to pain or unpleasant sensations by kicking.

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Things You'll Need

  • Rectal thermometer

About the Author

Tracy Morris has been a freelance writer since 2000. She has published novels and numerous online articles. Her work has appeared in national magazines and newspapers including "Ferrets," "CatFancy," "Lexington Herald Leader" and "The Tulsa World." She holds a Bachelor of Arts in journalism from the University of Arkansas.

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