Horse Urinary Incontinence: Causes, Neurologic Concerns & Next Steps

Urinary incontinence in horses usually means urine is leaking or dribbling without normal control. That can happen because the bladder is inflamed, overfilled, weak, or not receiving normal nerve signals. Your vet will usually think first about lower urinary tract disease, bladder emptying problems, and neurologic disease rather than assuming it is a simple behavior issue.

Common non-neurologic causes include cystitis or bladder inflammation, bladder stones or urethral obstruction, congenital abnormalities in foals, and overflow leakage from a bladder that is too distended to empty well. Horses with urinary tract disease may also show frequent urination, straining, urine scalding, cloudy urine, or blood in the urine.

Neurologic causes are especially important because the nerves that control the bladder, tail, and perineal area run through the lower spinal cord and sacrocaudal region. Diseases such as equine herpesvirus myeloencephalopathy, equine protozoal myeloencephalitis, trauma, and other spinal cord disorders can lead to reduced tail tone, hindlimb weakness, ataxia, loss of skin sensation around the hindquarters, and loss of bladder function.

In some horses, the bladder becomes atonic or poorly contractile after overdistension or nerve dysfunction. These horses may not fully empty the bladder, then leak urine in small amounts. That pattern can look mild at first, but it can lead to urine scalding, secondary infection, and worsening bladder damage if the underlying cause is not addressed.

Urinary leakage in a horse is usually a prompt veterinary problem, not something to watch for several days. Call your vet within 24 hours for new dribbling, wet hind legs, urine scalding, frequent small urinations, or unexplained damp bedding. Even if your horse seems bright, bladder dysfunction can worsen quietly.

See your vet the same day if your horse is straining to urinate, passing very small amounts, showing pain, acting colicky, or has blood in the urine. These signs raise concern for cystitis, obstruction, bladder overdistension, stones, or trauma. Foals with urine leakage, abdominal distension, depression, or failure to nurse need urgent evaluation because urinary tract rupture and congenital problems are possible.

Emergency care is warranted immediately if urinary incontinence happens along with hindlimb weakness, a wobbly gait, inability to rise, tail weakness, loss of anal tone, fever, or sudden neurologic changes. Those combinations can point to spinal cord or infectious neurologic disease and may affect both prognosis and biosecurity.

While waiting for your vet, keep your horse in a safe, well-bedded area, note how often urine is passed, and watch for weakness or straining. Do not start leftover medications or try to catheterize the horse yourself unless your vet has specifically instructed you to do so.

Your vet will start with a detailed history and physical exam. Expect questions about when the leaking started, whether the horse is drinking more, whether the urine looks bloody or cloudy, and whether there are neurologic signs like stumbling, tail weakness, or trouble backing. A rectal exam may help your vet assess bladder size and tone.

Initial diagnostics often include bloodwork and urinalysis. These tests help look for inflammation, kidney involvement, dehydration, infection, blood, crystals, and how concentrated the urine is. In horses with urinary tract concerns, ultrasound is commonly used to evaluate the bladder and kidneys, and some cases also need endoscopic evaluation of the urethra and bladder to look for obstruction, masses, malformations, or mucosal disease.

If your vet is worried about a neurologic cause, they may perform a full neurologic exam, including tail tone, anal tone, perineal sensation, gait evaluation, and backing or turning tests. Depending on the findings, your vet may recommend infectious disease testing such as PCR for EHV-1, spinal fluid testing, or referral for advanced imaging and specialty care.

Treatment depends on the cause. Options may include catheterization to decompress an overfilled bladder, anti-inflammatory medication, targeted antimicrobials when infection is documented or strongly suspected, skin care for urine scalding, and medications your vet may consider for bladder contractility in selected cases. Horses with neurologic disease may also need isolation precautions, hospitalization, and supportive nursing care.

Home care should focus on comfort, cleanliness, and observation while your vet works on the cause. Keep your horse in a dry, well-bedded area and clean urine-soaked hair from the hind legs, tail, and inner thighs. Moisture and urine residue can quickly lead to painful skin irritation, especially in warm weather.

If your vet approves, gently rinse and dry affected skin, then use a veterinary-recommended barrier product to reduce urine scalding. Do not apply strong antiseptics, powders, or human diaper-rash products without checking first, because some products can further irritate equine skin or complicate later examination.

Track what you see. Helpful notes include how often your horse urinates, whether the stream looks normal, whether there is straining, whether the urine is bloody or cloudy, and whether the horse seems weak behind. Short videos of gait changes, tail carriage, or urine dribbling can be very useful for your vet.

Limit stressful transport or exercise until your vet says it is safe, especially if there is any concern for neurologic disease. If your horse becomes wobbly, cannot rise, strains without producing urine, spikes a fever, or suddenly worsens, contact your vet immediately.