Laminitis in Horses: Signs, Causes, Treatment, and Prevention
- See your vet immediately. Laminitis is a painful hoof emergency that can lead to rotation or sinking of the coffin bone if treatment is delayed.
- Early signs can include short, stiff steps, reluctance to turn or walk, shifting weight, lying down more than usual, warm feet, and a stronger-than-normal digital pulse.
- Common triggers include endocrine disease such as equine metabolic syndrome or PPID, sudden access to grain or lush pasture, severe illness like colitis or retained placenta, and overload of the opposite limb after injury.
- Diagnosis usually involves a physical exam, hoof assessment, and hoof radiographs. Your vet may also recommend bloodwork such as insulin and ACTH testing to look for an underlying metabolic cause.
- Treatment often combines pain control, deep bedding, frog or sole support, diet changes, and coordinated hoof care with your vet and farrier. Some horses recover well, while severe cases need long-term management.
What Is Laminitis in Horses?
Laminitis is inflammation and structural damage within the laminae, the tissues that suspend the coffin bone inside the hoof. When those tissues weaken, the bond between the hoof wall and the bone can fail. That is why laminitis is not only painful, but also potentially life-changing for the horse.
In mild cases, a horse may look sore or take short, careful steps. In more severe cases, the coffin bone can rotate or sink within the hoof capsule. This is the process many horse people call founder. Laminitis most often affects the front feet, but it can involve all four feet, especially when a whole-body illness is involved.
Laminitis is best thought of as a medical emergency with many possible causes rather than one single disease. Today, many cases are linked to endocrine problems such as equine metabolic syndrome or PPID, while others happen after grain overload, severe infection, retained placenta, or heavy weight-bearing on one limb after another limb is injured.
The good news is that early recognition matters. Horses treated before major hoof displacement develops generally have a better outlook than horses seen later in the course of disease.
Symptoms of Laminitis in Horses
- Short, stiff gait or "walking on eggshells"
- Reluctance to walk, turn, or pick up a foot
- Shifting weight from foot to foot
- Standing with front feet stretched out in front of the body
- Warm hooves or a bounding digital pulse
- Lying down more than usual or refusing to rise
- Pain when turning in a small circle
- Visible hoof changes over time, such as rings or altered hoof shape
See your vet immediately if your horse is suddenly lame, taking short choppy steps, leaning back to unload the front feet, or refusing to move. These signs can appear within hours and may worsen quickly.
Some horses show subtle early changes before obvious lameness, especially horses with obesity, a cresty neck, or a history of pasture-associated laminitis. If your horse has warm feet, a stronger digital pulse, or seems sore after getting into grain or grazing lush pasture, treat that as urgent.
What Causes Laminitis in Horses?
Laminitis has several major cause categories. One of the most common today is endocrinopathic laminitis, which is linked to high insulin levels. Horses and ponies with equine metabolic syndrome, obesity, insulin dysregulation, or PPID are at higher risk. These horses may flare after eating lush pasture or feeds high in nonstructural carbohydrates.
Another important cause is systemic inflammatory disease. Severe illnesses such as colitis, enteritis, pleuropneumonia, or metritis after foaling can trigger laminitis through whole-body inflammation and toxin release. A mare that has not fully passed her placenta after birth is a classic emergency example.
Mechanical or support-limb laminitis can happen when one limb has to carry too much weight for too long because the opposite limb is badly injured. This is one reason any horse with a fracture, severe wound, or major joint infection needs close monitoring of the other feet.
Other recognized triggers include sudden grain overload, abrupt access to lush pasture, and exposure to black walnut shavings. Corticosteroids are sometimes discussed as a possible contributor, especially in horses already predisposed by endocrine disease, so medication history matters when your vet is sorting out the full picture.
How Is Laminitis in Horses Diagnosed?
Your vet usually starts with history and a hands-on exam. They will look at how your horse stands and walks, feel for heat in the feet, check the digital pulses, and assess pain response. In acute cases, the pattern of lameness and stance can strongly suggest laminitis even before major hoof changes are visible.
Hoof radiographs are a key part of diagnosis and monitoring. X-rays help your vet evaluate whether the coffin bone has rotated or sunk, measure sole depth, and guide trimming or therapeutic shoeing decisions. Early in the acute phase, radiographic changes may be mild, so repeat imaging is sometimes needed.
Because laminitis is often a consequence of another problem, your vet may also recommend bloodwork. Insulin and glucose testing can help assess equine metabolic syndrome or insulin dysregulation, and ACTH testing may be used when PPID is a concern. If the case follows severe illness, additional bloodwork may focus on the underlying inflammatory or infectious disease.
In more complex or referral-level cases, your vet may discuss venography to assess blood flow within the hoof, especially when standard radiographs do not fully explain the severity of pain. Diagnosis is not only about confirming laminitis. It is also about identifying the trigger, because long-term control depends on treating that underlying cause.
Treatment Options for Laminitis in Horses
Spectrum of Care means you have options. Here are treatment tiers at different price points.
Budget-Conscious Care
- Urgent farm call or exam
- Pain control prescribed by your vet, often with an NSAID
- Strict stall rest with deep bedding or soft footing
- Temporary frog or sole support such as pads, impression material, or hoof boots if appropriate
- Immediate diet review with removal of grain and restriction of high-sugar pasture
- Basic hoof radiographs when available, or close follow-up if imaging must be staged
Recommended Standard Treatment
- Full veterinary exam and serial pain assessments
- Hoof radiographs to measure rotation, sinking, and sole depth
- Targeted bloodwork such as insulin, glucose, and ACTH when endocrine disease is suspected
- Prescription pain control and anti-inflammatory care directed by your vet
- Deep bedding, strict movement restriction during the acute phase, and mechanical hoof support
- Coordinated trimming or therapeutic shoeing plan with your vet and farrier
- Diet plan centered on low nonstructural carbohydrate forage and controlled pasture access
- Scheduled rechecks and repeat radiographs as needed
Advanced / Critical Care
- Referral hospital care or intensive on-farm management for severe pain or inability to stand
- Continuous or prolonged distal limb cryotherapy in appropriate acute cases
- Advanced imaging or venography when indicated
- Frequent radiographic monitoring and specialized farriery or foot casting
- Aggressive treatment of the underlying trigger such as colitis, metritis, or support-limb overload
- Hospitalization, IV fluids, and round-the-clock nursing when systemic illness is present
- Surgical consultation, including deep digital flexor tenotomy in selected refractory cases
Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.
Questions to Ask Your Vet About Laminitis in Horses
Bring these questions to your vet appointment to get the most out of your visit.
- Do my horse's signs fit acute laminitis, chronic laminitis, or another cause of foot pain?
- Should we take hoof radiographs now, and what measurements will you use to track progress?
- Does my horse need insulin, glucose, or ACTH testing to look for EMS or PPID?
- What footing, bedding, and movement restriction do you recommend during the next few days?
- Should my horse have pads, boots, trimming changes, or therapeutic shoeing, and when should my farrier be involved?
- What should my horse eat right now, and do we need to restrict pasture or soak hay?
- Which warning signs mean I should call you back immediately, even after treatment starts?
- What is the expected cost range for the first week, the first month, and longer-term hoof care?
How to Prevent Laminitis in Horses
Prevention starts with identifying horses at higher risk. Overweight horses, easy keepers, ponies, horses with a cresty neck, and horses with known EMS or PPID need especially careful management. If your horse has had laminitis before, assume recurrence is possible and make a prevention plan with your vet.
Feed management matters. Avoid sudden access to grain, secure feed rooms, and introduce pasture gradually, especially in spring when grass is growing fast. Many at-risk horses do best with controlled pasture time, a grazing muzzle, low nonstructural carbohydrate forage, and a ration plan built around measured calories rather than guesswork.
Routine hoof care is another major piece. Regular trimming, often every 4 to 8 weeks depending on the horse, helps maintain balance and lets hoof changes get noticed early. Horses recovering from laminitis may need more frequent farrier visits and periodic radiographs to guide hoof care.
Finally, manage the diseases that raise laminitis risk. Prompt treatment of retained placenta, colitis, severe infections, and major limb injuries can reduce secondary laminitis risk. For horses with endocrine disease, ongoing monitoring of insulin control, body condition, and seasonal changes can make flare-ups less likely.