Laminitis in Horses: Causes, Signs and Treatment

If you have noticed your horse standing oddly, shifting its weight, or seeming reluctant to walk, trust that instinct. Laminitis in horses is one of the most serious conditions in equine health, and it is also one where speed matters more than almost anything else.

If you suspect laminitis, call your vet now.

What follows will help you understand what is happening, why urgency matters, and what recovery and prevention look like once your horse is in good hands. Laminitis is treatable, especially when it is caught early, and knowing what to expect can make a frightening situation feel a little more manageable.

What Is Laminitis?

Laminitis is inflammation and damage to the laminae, the interlocking soft tissue structures that attach the pedal bone (the coffin bone) inside the hoof to the hoof wall itself. Think of the laminae as a kind of internal Velcro, holding one of the horse's most heavily loaded bones securely in place while it bears the animal's full weight. When the laminae become inflamed, they weaken and stretch. In more severe cases, they fail altogether, allowing the pedal bone to rotate or sink within the hoof capsule. This is called founder, and it can cause permanent structural change to the hoof.

Laminitis is not a disease in itself but a symptom of an underlying problem, whether metabolic, mechanical or systemic. It can affect one hoof or all four, though the front feet are most commonly involved because they carry more of the horse's weight. Because the condition can progress from mild discomfort to irreversible damage within hours, laminitis is always considered a veterinary emergency, even when the early signs seem subtle.

What Is Laminitis?

What Causes Laminitis in Horses?

Laminitis has several distinct triggers, and understanding which one applies to your horse is central to both treatment and long-term prevention.

Pasture and grass-associated causes are among the most common, particularly in spring and fall when pasture grasses are high in sugars and fructans. Horses grazing on lush, rapidly growing grass can experience a sudden overload of soluble carbohydrates in the hindgut, disrupting the microbial balance and triggering an inflammatory cascade that reaches the laminae. This risk is significantly higher in horses with Equine Metabolic Syndrome (EMS), a condition characterized by insulin resistance and often accompanied by regional fat deposits, such as a thickened neck crest.

Cushing's disease, or PPID (Pituitary Pars Intermedia Dysfunction), is another major cause, particularly in older horses and ponies. PPID disrupts hormone regulation in ways that can drive persistently high insulin levels, leaving affected horses vulnerable to laminitis even outside the typical spring grass season.

Obesity and insulin dysregulation go hand in hand with both EMS and PPID. Elevated insulin appears to have a direct, damaging effect on the laminae, which is why weight management is such a central part of laminitis prevention.

Beyond metabolic causes, mechanical laminitis, sometimes called road founder, can result from prolonged concussion on hard surfaces or excessive weight-bearing on one limb due to injury elsewhere. This form is less about hormonal imbalance and more about repeated physical stress on structures that were never designed to absorb that much impact.

Retained placenta in mares after foaling is another recognized trigger, thought to arise when toxins from the retained tissue enter the bloodstream and disrupt normal laminar function within days of birth. Similarly, systemic illness or sepsis, such as severe colic, colitis or infection elsewhere in the body, can trigger what is known as sepsis-related laminitis. In these cases, the inflammatory response set off by the underlying illness spreads through the bloodstream and damages the laminae in all four feet at once, which is why horses recovering from serious systemic disease are watched so closely for early hoof changes.

Signs and Symptoms of Laminitis

Early recognition gives your horse the best chance of a full recovery, so it is worth knowing exactly what to watch for. The classic sign is the founder stance, where a horse rocks its weight backwards onto its hindquarters and stretches its front legs forward to take pressure off the painful toe area. You may also notice your horse standing with its feet camped out or shifting weight from foot to foot as if trying to find a comfortable position, since standing still on painful laminae is genuinely difficult.

The hooves themselves often feel noticeably warmer than usual, and you may be able to feel a strong, bounding digital pulse at the back of the fetlock, a pulse that is normally faint or hard to detect. Lameness is another key indicator, particularly on hard ground or when turning in tight circles, and it may affect one leg, several legs, or appear as a short, stilted gait in all four. Some horses become reluctant to move at all, lying down more than usual or resisting being led out of the stable. If you notice any combination of these signs, do not wait to see if it passes. Contact your vet immediately.

Signs and Symptoms of Laminitis

Types of Laminitis

Veterinarians generally classify laminitis into four types, each with different implications for management.

Acute laminitis describes the sudden onset of pain and inflammation, typically over a period of hours to a few days. This is the phase where prompt veterinary intervention has the greatest impact on long-term outcome.

Chronic laminitis refers to cases where structural damage has already occurred, often including rotation or sinking of the pedal bone. These horses may have ongoing or recurring bouts of lameness and usually require long-term farrier and management support.

Subclinical, or subacute, laminitis is a milder and easily missed form where a horse may show only faint signs, such as a slightly shortened stride or intermittent sensitivity on hard ground, without the dramatic founder stance. It is particularly common in horses with underlying EMS or PPID and can quietly progress if left unaddressed.

Supporting-limb laminitis develops in a healthy leg that is forced to bear excessive weight while the opposite limb is injured or in a cast, most often following orthopedic surgery or a severe lameness elsewhere. It is a reminder that laminitis risk exists whenever normal weight distribution is disrupted for an extended period.

How Laminitis Is Diagnosed

Diagnosis begins with a thorough history and physical examination. Your vet will assess your horse's stance, gait and hoof temperature, check for a bounding digital pulse, and use hoof testers to pinpoint areas of sensitivity, particularly around the toe.

Radiographs (X-rays) are the standard tool for assessing whether the pedal bone has rotated or sunk within the hoof capsule, and they provide a baseline that helps guide farriery decisions and monitor progress over time. Blood tests are also important, particularly for measuring resting insulin and glucose levels, and in some cases ACTH, which helps identify or rule out PPID. Together, these findings allow your vet to determine both the severity of the laminitis and its underlying cause, which shapes every decision that follows.

How Laminitis Is Diagnosed

Treatment for Laminitis

Treatment for laminitis works best as a coordinated effort between your vet, your farrier and you as the primary carer at home.

Emergency veterinary care and pain management come first. Your vet will likely prescribe anti-inflammatory and pain relief medication, recommend strict stall rest on a deep, supportive bedding such as sand or shavings, and may apply supportive frog padding or specialised boots to reduce pressure on the damaged laminae while the acute inflammation settles. In more severe cases, additional treatments such as cryotherapy (cooling the lower limbs) or medications to improve blood flow to the hoof may also be used in the first hours and days.

Farrier support and hoof management typically follow once the horse is stable, though in many cases a farrier is involved from the earliest stages, working closely alongside the vet and often referring to the radiographs taken during diagnosis. Depending on the findings, this might involve therapeutic shoeing, heart bar shoes, or trimming adjustments designed to redistribute weight away from the most affected areas and support the pedal bone as it heals. This is rarely a one-off intervention. Most horses need a series of follow-up visits as the hoof grows and the internal structures stabilise.

Dietary changes and management adjustments are essential, particularly for horses whose laminitis stems from metabolic causes. This usually means restricting access to lush pasture, switching to a low-sugar, low-starch diet, soaking hay to reduce soluble carbohydrate content, and addressing any underlying insulin dysregulation or PPID with appropriate veterinary treatment, which may include prescription medication. These changes are not short-term measures. For metabolically prone horses, they become part of daily life going forward, and getting them right is often what determines whether a horse has one laminitis episode or several.

Recovery and Prognosis

Recovery from laminitis varies enormously depending on the underlying cause, how quickly treatment began, and how much structural damage occurred before diagnosis. Horses treated promptly for mild, pasture-associated laminitis often return to full soundness within weeks. Those with more advanced rotation or a chronic, recurring pattern may need months of careful management, and some will always be considered laminitis-prone, requiring lifelong vigilance around diet and body condition.

Once your vet has cleared the immediate crisis and set a management plan, many owners start looking at the bigger picture of long-term wellness for a horse recovering from, or at risk of, laminitis. This is where broader nutritional support can play a supporting role alongside veterinary care, farriery and diet management, rather than as a treatment in itself. Rose-Hip Vital Equine is a natural rosehip supplement that preserves GOPO®, a galactolipid compound studied for its role in supporting a healthy inflammatory response and general joint comfort.

Recovery and Prognosis

How Can Rose-Hip Vital Equine Help Horses Recovering from Laminitis

Rose-Hip Vital Equine's natural, GOPO®-rich formula offers gentle, everyday support for horses working through laminitis recovery or managing an ongoing predisposition to the condition. Made from patently-processed rosehip, it's designed to support joint comfort and a healthy inflammation response as part of a horse's daily routine, without adding harsh or synthetic ingredients to their diet.

For horses navigating the recovery period or managing an ongoing predisposition to laminitis, this kind of everyday nutritional support can sit comfortably alongside the diet and management changes your vet recommends. Always discuss any new supplement with your vet first, particularly for a horse with EMS or PPID, so it fits appropriately within their overall care plan.

Preventing Laminitis

Prevention is almost always more achievable, and considerably kinder, than treatment.

Diet and grazing management are the foundation. Limit access to lush pasture during high-risk periods such as spring and fall, consider a grazing muzzle or strip grazing for sensitive horses, turn out earlier in the morning when fructan levels in grass tend to be lower, and choose low-sugar hay and feeds for any horse with a known metabolic predisposition. A soil or pasture test can also help you understand what your paddocks are actually offering at different times of year.

Weight monitoring and body condition scoring should become a routine habit rather than an occasional check. Regularly assessing your horse's body condition score, ideally monthly, and adjusting feed accordingly, helps catch weight gain before it tips into the kind of obesity that drives insulin dysregulation. A weight tape, used consistently over time, can also help you track trends even before changes are obvious to the eye.

Regular exercise and monitoring of at-risk horses rounds out a solid prevention plan. Horses with EMS, PPID, or a history of laminitis benefit from consistent, appropriate exercise to support insulin sensitivity, along with more frequent vet checks, including periodic blood testing, to catch early metabolic changes before they progress to a full laminitic episode. If your horse falls into any at-risk category, ask your vet about a tailored monitoring schedule rather than waiting for symptoms to appear, since the earliest metabolic warning signs rarely show up as visible lameness.

This article is general information and is not a substitute for veterinary advice. If you suspect your horse has laminitis, contact your vet immediately.

Frequently Asked Questions

Is laminitis the same as navicular disease?
No. Laminitis affects the laminae connecting the hoof wall to the pedal bone and is typically linked to metabolic, mechanical or systemic triggers. Navicular disease is a separate condition involving degeneration of the navicular bone and surrounding structures, usually causing chronic heel pain. Both cause lameness, but they have different causes, diagnoses and treatments.
How long can a horse live with laminitis?
Many horses live long, comfortable lives after a laminitis episode, particularly with prompt treatment and ongoing management of diet, weight and any underlying condition such as EMS or PPID. Horses with severe rotation or recurring chronic laminitis face a more guarded outlook, but with dedicated farrier and veterinary support, long-term management is often successful.
What kind of ongoing hoof care does a horse with laminitis need?
Horses recovering from laminitis usually need more frequent farrier visits, often every four to six weeks, to manage hoof growth and maintain correct weight distribution. This may include therapeutic shoeing or specialised trimming based on radiographic findings, alongside regular monitoring for any return of heat, pulse or sensitivity in the hooves.

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