Horse Ear Drooping: Ear Injury, Infection or Nerve Problem?

A horse that suddenly carries one ear lower than the other may have a painful ear problem, swelling around the base of the ear, or weakness of the facial nerve. In horses, the facial nerve controls ear, eyelid, nostril, and lip movement. When that nerve is injured, signs can include a drooping ear, reduced blinking, a drooping upper lip, drooling, and less nostril flare on the same side.

Local trauma is one of the more common explanations. Kicks, bites, head tossing into a wall or trailer, halter pressure, or pressure during anesthesia can bruise soft tissues or injure branches of the facial nerve. Ear-base wounds, hematomas, and fractures can also make the ear hang lower because movement is painful.

Infection and inflammation are also possible. Middle or inner ear disease can cause pain, head shaking, discharge, head tilt, and facial nerve palsy. In horses, facial paralysis can also happen with guttural pouch infection, temporohyoid osteoarthropathy, or less commonly with neurologic disease such as equine protozoal myeloencephalitis. Those problems may come with trouble swallowing, abnormal noise when eating, ataxia, or other cranial nerve changes.

Some horses have a temporary droop from localized swelling and recover well. Others have a true nerve problem that takes weeks to months to improve. If there is no improvement after several months, recovery becomes less likely, so getting your vet involved early gives your horse the best chance for a clear diagnosis and a practical treatment plan.

A mild ear droop without other signs may be reasonable to monitor briefly if your horse is bright, eating normally, has no visible wound, no heat or swelling, and the eye, lip, and nostril all move normally. Even then, take clear photos or video, remove any tight halter or tack, and arrange a non-urgent exam if the droop lasts more than 24 hours.

See your vet the same day if the drooping ear appeared after trauma, if the ear is painful to touch, or if you notice discharge, foul odor, fever, head shaking, or swelling near the ear or throatlatch. These signs raise concern for injury, abscess, ear disease, or guttural pouch involvement.

See your vet immediately if the horse cannot blink, has a dry or irritated eye, also has a drooping lip or nostril, is quidding feed, choking, stumbling, circling, head tilting, or seems weak or dull. Those signs suggest facial nerve paralysis or a broader neurologic problem, and eye injury can develop quickly when the eyelids do not close normally.

Do not put anything deep into the ear canal or start leftover medications on your own. Horses with ear pain can react suddenly, and the wrong topical product can complicate diagnosis or irritate damaged tissue.

Your vet will start with a full physical and neurologic exam. They will compare ear position and movement, check whether the horse can blink, assess lip and nostril tone, look for head tilt or ataxia, and ask about recent trauma, anesthesia, transport, tack changes, or signs such as head shaking and trouble eating.

A careful ear and head exam usually follows. Depending on your horse's comfort level, your vet may sedate your horse to inspect the ear canal, look for wounds or foreign material, and palpate the area around the ear base, jaw, and throatlatch. If infection, guttural pouch disease, temporohyoid osteoarthropathy, or skull injury is suspected, your vet may recommend bloodwork, endoscopy, radiographs, ultrasound, or referral imaging such as CT.

If facial nerve dysfunction is confirmed, your vet will focus on finding the cause rather than treating the droop alone. Treatment may include anti-inflammatory medication, antimicrobials when infection is present, eye lubrication or eye protection if blinking is reduced, wound care, and supportive feeding or watering changes if lip weakness makes eating messy.

Follow-up matters. Facial nerve injuries can improve over time, but your vet may want repeat neurologic exams to track recovery. If the eye is exposed, rechecks are especially important because corneal ulcers can become a secondary problem even when the original cause is improving.

Home care should support your vet's plan, not replace it. Keep your horse in a calm, safe area where they are less likely to bump the affected side of the head. Remove tight halters when safe to do so, avoid fly masks or tack that press on sore tissues unless your vet recommends them, and watch closely for changes in blinking, tearing, appetite, and manure output.

If your vet confirms reduced blink, eye care becomes a priority. Use only the eye lubricant or medication your vet recommends, exactly as directed. Call sooner if the eye looks red, cloudy, squinty, or more painful. Corneal injury can develop quickly when the eyelids do not close well.

Offer easy access to clean water and feed at a comfortable height. Some horses with facial weakness do better with softer feeds or soaked pellets because feed and water may fall from the mouth. Keep notes or short videos each day so your vet can judge whether ear position, lip tone, and eye function are improving.

Do not probe the ear canal, flush the ear, or apply leftover ointments unless your vet specifically tells you to. Horses with ear pain can become reactive fast, and home treatment in the wrong spot can worsen injury or delay the right diagnosis.