Vet-first hoof guide

Laminitis in Horses: Symptoms and Spring Grass Risk

Laminitis is an urgent, painful failure of the tissues that support the coffin bone inside the hoof. Early clues can include a stronger digital pulse, unusual hoof heat, shifting weight, a rocked-back stance, short careful steps, and reluctance to turn or move.

What to do if you suspect laminitis

  1. Stop riding, exercising, or forcing the horse to walk.
  2. Call your veterinarian promptly and describe the signs you see.
  3. Keep the horse quiet on safe, supportive footing while following veterinary instructions.
  4. Record recent feed changes, pasture access, illness, medications, foaling, and when the signs began.
  5. Do not start a topical, drug, diet change, icing protocol, or hoof-support method unless your veterinarian directs it.

Do not wait for every classic sign. Laminitis can begin subtly, and not every horse assumes the textbook stance.

Short answer: A horse with sudden foot soreness, a stronger-than-normal digital pulse, warmth in one or more feet, weight shifting, or reluctance to turn deserves prompt veterinary attention. Those signs can have several causes, but laminitis must be ruled out quickly.

Early laminitis symptoms riders may notice

Movement changes

  • Short, careful, or pottery steps
  • Reluctance to walk forward
  • Difficulty turning tightly
  • More discomfort on hard ground

Standing and hoof clues

  • Repeated weight shifting
  • A rocked-back or stretched-out stance
  • One or more feet warmer than the horse's normal baseline
  • A stronger or bounding digital pulse

Longer-term clues may include recurring soreness, abnormal growth rings, a changed hoof shape, white-line separation, or repeated abscesses. These findings are not a home diagnosis. They are reasons to involve the veterinarian and farrier.

Why spring grass matters

Spring pasture is not dangerous to every horse, but rapidly growing grass can carry more nonstructural carbohydrates. Susceptible horses can have a higher risk of pasture-associated laminitis, including easy keepers, ponies, overweight horses, horses with insulin dysregulation or equine metabolic syndrome, horses with PPID, and horses that have foundered before.

Pasture risk rises when

  • Grass is immature or rapidly regrowing.
  • Cool nights are followed by warm, sunny days.
  • Pasture is stressed by drought or a hard freeze.
  • A susceptible horse suddenly gains access or grazing time.

There is no universally safe grazing schedule for every at-risk horse. Ask your veterinarian or equine nutritionist for an individual plan. Grazing muzzles, dry lots, tested forage, weight management, and carefully controlled turnout may be part of that plan.

How to check a digital pulse

Learn your horse's normal baseline before a problem starts. Feel gently along either side of the back of the pastern or fetlock where the digital arteries run. Compare both sides and all four feet. A pulse that suddenly feels stronger than normal matters most when it appears with heat, soreness, or a change in movement.

Use the complete horse digital-pulse guide for landmark and comparison instructions.

What not to do

  • Do not force movement to see whether the horse will "walk out of it."
  • Do not assume a warm hoof or strong pulse proves laminitis by itself.
  • Do not use a liniment, salve, poultice, or hoof product as a laminitis treatment.
  • Do not make abrupt feed or turnout changes without professional guidance.
  • Do not delay the call while waiting for your farrier or an online opinion.

Frequently asked questions

Is laminitis the same as founder?

The terms are often used together. Laminitis describes damage and failure within the laminar tissues. Founder commonly refers to cases in which the coffin bone has displaced, although everyday usage varies.

Can a horse have laminitis without a rocked-back stance?

Yes. Signs vary, especially early. Reluctance to turn, a stronger digital pulse, hoof heat, or subtle short steps may appear before a dramatic stance.

Can a liniment or hoof product treat laminitis?

No. Laminitis requires veterinary diagnosis and a coordinated veterinary and farrier plan. A topical product is not a substitute.

Should I exercise a horse with suspected laminitis?

No. Do not force movement or exercise a horse with suspected laminitis. Follow your veterinarian's instructions.

Updated August 15, 2026. Educational information only. Suspected laminitis requires prompt veterinary care.

Draw It Out®

Calm Care. Clear Routine.

Purpose-built horse care for repeatable barn routines without the old-school burn, sting, or heavy medicinal smell. Follow the current product label and verify competition rules before every event.

From the barn aisle to the show pen, Draw It Out® stands for one simple idea. Take care of the horse in front of you.

Start Here

Not sure what to do next?

Pick the fastest next step. If you already know what you need, jump straight to the right lane.

Routine first

Built for repeatable routines, not hype.

Real riders

Made for everyday horse people who do the work.

Need help?

Need a quick pointer? Contact us.