Stomatitis in Llamas: Mouth Inflammation, Drooling, and Oral Pain

Quick Answer
  • Stomatitis means inflammation of the mouth. In llamas, it can involve the lips, gums, tongue, cheeks, or oral lining and may cause drooling, bad breath, and reluctance to eat.
  • Common triggers include trauma from coarse feed or foreign material, irritating plants or chemicals, dental problems, and infectious diseases such as contagious ecthyma or vesicular stomatitis.
  • See your vet promptly if your llama is drooling heavily, dropping feed, losing weight, has visible mouth ulcers or crusts, or seems painful when chewing.
  • If there are blister-like lesions, widespread mouth sores, or multiple animals affected, isolate the llama and call your vet immediately because reportable diseases such as vesicular stomatitis or foot-and-mouth disease must be ruled out.
  • Typical 2025-2026 U.S. veterinary cost range for evaluation and treatment is about $250-$1,500 for mild to moderate cases, with higher costs if sedation, lab testing, hospitalization, or outbreak-level disease workup is needed.
Estimated cost: $250–$1,500

What Is Stomatitis in Llamas?

Stomatitis is inflammation of the tissues inside the mouth. In llamas, that can affect the lips, gums, tongue, palate, cheeks, or the lining of the mouth. The problem may look like redness, swelling, ulcers, erosions, crusting near the lips, or excess saliva. Because eating is uncomfortable, many llamas chew slowly, drop feed, or avoid hay and pellets altogether.

Stomatitis is not one single disease. It is a clinical finding with several possible causes. Some cases are local and mechanical, such as a sharp stem, thorn, awn, or dental issue rubbing the mouth. Others are linked to infections, including contagious ecthyma (orf) or vesicular stomatitis, which can cause lesions around the mouth and may have herd-level or public health implications.

For pet parents, the biggest concern is that mouth pain can quickly lead to poor intake, dehydration, and weight loss. Llamas also may hide discomfort until the problem is fairly advanced. Early veterinary evaluation helps your vet determine whether this is a straightforward oral injury or part of a more serious infectious condition.

Symptoms of Stomatitis in Llamas

  • Drooling or strings of saliva, especially during or after eating
  • Reluctance to eat, slow chewing, or dropping partially chewed feed
  • Weight loss or reduced body condition over days to weeks
  • Bad breath or a foul oral odor
  • Visible redness, swelling, ulcers, erosions, or raw patches in the mouth
  • Crusts or sores on the lips, muzzle, or around the mouth
  • Pain when the mouth is touched or opened
  • Head shaking, feed aversion, or repeated attempts to chew without swallowing well
  • Reduced water intake or signs of dehydration in more painful cases
  • Less common but more urgent: fever, lameness, lesions near the feet or coronary band, or multiple affected animals

Mild stomatitis may show up as picky eating and a little drooling. More painful cases can cause obvious oral sores, feed dropping, weight loss, and dehydration. If your llama has blister-like lesions, severe drooling, fever, foot lesions, or if more than one animal is affected, see your vet immediately and limit contact with other livestock until a contagious cause is ruled out.

What Causes Stomatitis in Llamas?

Stomatitis in llamas can start with local irritation or injury. Coarse stems, thorns, awns, splinters, sharp feed contaminants, and lodged foreign material can scrape or puncture the oral tissues. Dental abnormalities, broken teeth, or uneven wear may also create chronic rubbing and inflammation. In some cases, caustic chemicals or irritating plants can damage the mouth lining.

Infectious disease is another important category. Merck notes that camelids can develop crusting lesions around the nose and mouth with contagious ecthyma, also called orf, a zoonotic parapoxvirus infection. Vesicular stomatitis can also affect llamas and alpacas, causing vesicles, ulcers, and erosions in and around the mouth. Because vesicular diseases can resemble more serious foreign animal diseases, your vet may treat these lesions as urgent until testing says otherwise.

Secondary bacterial infection can make any oral lesion more painful and slower to heal. Less commonly, stomatitis may be part of a broader systemic illness. That is why your vet will look beyond the mouth itself and consider appetite, temperature, herd history, travel, insect exposure, and whether any other animals have similar signs.

How Is Stomatitis in Llamas Diagnosed?

Diagnosis starts with a careful history and physical exam. Your vet will ask when the drooling or oral pain began, what the llama has been eating, whether there has been recent transport or show exposure, and whether any other animals have mouth lesions. Body condition, hydration, temperature, and the presence of lesions on the lips, muzzle, feet, or skin all help narrow the cause.

A full oral exam is often needed, and Merck notes that examination of large-animal mouths may require sedation, a mouth speculum, and a good light source. That allows your vet to look for ulcers, erosions, foreign bodies, dental trauma, feed impaction, or deeper tissue injury. If lesions are suspicious for an infectious disease, your vet may collect swabs, crusts, or tissue samples for PCR, virus testing, or other lab work.

Testing may also include a complete blood count, chemistry panel, or culture if secondary infection is suspected. When vesicular disease is possible, your vet may involve state or federal animal health officials because vesicular stomatitis is reportable in the United States and must be distinguished from other serious diseases. In practical terms, diagnosis is often a stepwise process: confirm the lesion type, rule out reportable disease, then target treatment to the most likely cause.

Treatment Options for Stomatitis in Llamas

Spectrum of Care means you have options. Here are treatment tiers at different price points.

Budget-Conscious Care

$250–$500
Best for: Mild cases with drooling or oral discomfort but no severe dehydration, no foot lesions, and no outbreak concern.
  • Farm call or clinic exam
  • Basic oral assessment, with limited handling if the llama is stable
  • Pain-control plan selected by your vet
  • Supportive feeding changes such as softer forage, soaked pellets, and easy water access
  • Isolation and monitoring at home if an infectious cause is possible
  • Follow-up recheck if eating does not improve within 24-72 hours
Expected outcome: Often good if the cause is minor trauma or irritation and the llama keeps eating and drinking.
Consider: This approach may not identify deeper ulcers, foreign bodies, dental disease, or reportable infections. If signs worsen or intake drops, more diagnostics are usually needed.
Most Common

Recommended Standard Treatment

$500–$1,500
Best for: Most llamas with visible ulcers, persistent drooling, feed dropping, weight loss, or uncertain cause.
  • Complete veterinary exam and fuller oral examination, often with sedation
  • Targeted diagnostics such as oral swabs, lesion sampling, bloodwork, or dental evaluation
  • Prescription pain relief and anti-inflammatory treatment chosen by your vet
  • Treatment for secondary bacterial infection when indicated
  • Debridement or removal of foreign material if found
  • Nutrition and hydration support, with recheck planning
Expected outcome: Good to fair, depending on the underlying cause. Traumatic and uncomplicated infectious lesions often improve with supportive care, while deeper or recurrent disease can take longer.
Consider: Higher cost range and more handling. Sedation and testing add expense, but they often improve diagnostic accuracy and comfort.

Advanced / Critical Care

$1,500–$4,000
Best for: Severe oral pain, marked weight loss, dehydration, multiple lesions, herd outbreaks, or suspected reportable infectious disease.
  • Hospitalization for dehydration, severe pain, or inability to eat
  • IV or intensive fluid support
  • Advanced lesion sampling, imaging, or specialist consultation if available
  • Aggressive wound care and nutritional support
  • Biosecurity measures and official disease reporting workup when vesicular disease is suspected
  • Repeated exams and monitoring for complications
Expected outcome: Variable. Many llamas recover well with intensive support, but outcome depends on how quickly the cause is identified and whether there are systemic or regulatory disease concerns.
Consider: This tier has the highest cost range and may require transport, isolation, and repeated testing. It is most appropriate when the llama is unstable or when public animal health concerns must be addressed.

Cost estimates as of 2026-03. Actual costs vary by location, clinic, and individual case.

Questions to Ask Your Vet About Stomatitis in Llamas

Bring these questions to your vet appointment to get the most out of your visit.

  1. What do you think is most likely causing the mouth inflammation in my llama?
  2. Do these lesions look traumatic, dental, or infectious?
  3. Does my llama need sedation for a complete oral exam?
  4. Should we test for vesicular stomatitis, contagious ecthyma, or another reportable disease?
  5. What pain-control options fit my llama's condition and budget?
  6. What should I feed and how can I keep hydration up while the mouth heals?
  7. Does this llama need to be isolated from other camelids or livestock?
  8. What changes would mean I should call back right away or move to a more advanced treatment plan?

How to Prevent Stomatitis in Llamas

Prevention starts with reducing oral injury. Check hay, browse, and bedding for sharp stems, awns, wire, splinters, or other contaminants. Feed from clean areas when possible, and remove plants or materials that could irritate the mouth. Routine observation during feeding is helpful because early chewing changes are often the first clue that something is wrong.

Good herd health practices matter too. Quarantine new arrivals, avoid nose-to-nose contact with unfamiliar livestock, and clean shared equipment between groups. If any llama develops mouth crusts, ulcers, or heavy drooling, separate that animal and contact your vet before moving animals on or off the property. This is especially important because vesicular diseases can mimic each other and some require official reporting.

Regular dental and wellness checks can help catch problems before they become painful. Ask your vet about an appropriate oral exam schedule for your herd, especially for animals with prior dental issues, weight loss, or chronic feed dropping. Gloves and careful hygiene are also wise when handling mouth lesions, since contagious ecthyma is zoonotic and can infect people through broken skin.

Find a Vet Near You