Crested Gecko Stomatitis: Oral Inflammation and Mouth Infections Explained

Crested gecko stomatitis is inflammation of the tissues inside the mouth. In reptiles, pet parents may hear it called infectious stomatitis or mouth rot. The condition can affect the gums, lip margins, tongue, and deeper tissues of the jaw. In more advanced cases, infection can spread into the underlying bone.

This problem is not unique to crested geckos, but geckos can develop it when the mouth lining is irritated or injured and normal bacteria take advantage of that damage. Reptile references describe stomatitis as a condition often linked to stress, poor environmental conditions, trauma, or other illness that weakens normal defenses.

Early cases may look subtle. A gecko may eat less, resist food, or seem uncomfortable when licking or biting. As inflammation worsens, you may notice redness, swelling, stringy saliva, debris in the mouth, or a bad odor. Because crested geckos are small and often hide illness well, even mild mouth changes are worth a prompt visit with your vet.

The good news is that many cases respond well when caught early. Treatment depends on how deep the infection goes and whether husbandry problems, nutritional imbalance, or another disease are also involved.

Stomatitis usually develops when the mouth lining is damaged and bacteria already present in the mouth gain access to deeper tissue. In reptiles, husbandry problems are a major part of the picture. Temperatures outside the proper range, poor sanitation, chronic stress, overcrowding, and nutritional imbalance can all weaken immune defenses and make infection more likely.

Trauma is another common trigger. A gecko may injure the mouth by rubbing on enclosure surfaces, striking hard decor, biting inappropriate feeder items, or dealing with retained shed around the face. Even a small wound can become infected. If the infection progresses, it may involve the jawbone and become much harder to treat.

Underlying disease also matters. Parasites, dehydration, metabolic bone disease, and other chronic illnesses can reduce a reptile's ability to heal. That is why your vet will usually look beyond the mouth itself and ask detailed questions about enclosure setup, humidity, temperature gradients, UVB exposure if used, diet, supplements, and recent shedding history.

For pet parents, the key point is that stomatitis is often both an infection and a husbandry signal. Treating the mouth without correcting the environment can lead to recurrence.

Diagnosis starts with a hands-on exam by a reptile-experienced vet. Your vet will look for redness, ulcers, mucus, pus, loose tissue, swelling, and pain around the mouth and jaw. Because crested geckos are small and can stress easily, the exam may be brief at first, followed by a more detailed oral evaluation if the gecko is stable enough.

Your vet will also review husbandry in detail. Expect questions about enclosure size, temperature range, humidity, substrate, cleaning schedule, diet, supplementation, recent shed problems, and any recent trauma. This part matters because stomatitis often develops secondary to environmental stress or another health issue.

Depending on severity, your vet may recommend cytology or culture of oral material to help identify infection, along with skull radiographs to look for deeper tissue or bone involvement. In advanced cases, bloodwork may be discussed, although sample size can be limiting in very small reptiles. These tests help guide treatment choices and give a clearer idea of prognosis.

If your gecko has stopped eating or appears dehydrated, your vet may also assess body condition and hydration status right away. That helps determine whether supportive care, assisted feeding, or fluid therapy should be part of the plan.

Prevention starts with strong daily husbandry. Keep the enclosure clean, remove waste promptly, and disinfect food dishes and decor on a regular schedule. Make sure temperature and humidity stay in the appropriate range for crested geckos, because chronic environmental stress can weaken immune function and slow healing.

Reduce mouth trauma whenever possible. Offer safe climbing surfaces, avoid sharp decor, and watch for repeated rubbing on glass or screen. If your gecko has trouble shedding around the face, address humidity and shedding support early so retained shed does not irritate delicate tissues.

Nutrition also matters. Feed a balanced crested gecko diet and review supplements with your vet, especially if you also offer insects. Poor nutrition and metabolic bone disease can make oral tissues and bone more vulnerable. Quarantine new reptiles, wash hands between animals, and avoid sharing equipment without cleaning it first.

Regular wellness visits with your vet can help catch subtle oral changes before they become advanced infections. If you notice appetite changes, mouth redness, or swelling, early evaluation is usually the most practical and cost-conscious step.