What Is a Respiratory Infection in Crested Geckos?
Respiratory infections (RIs) are among the more serious health concerns in captive crested geckos. Unlike desert reptiles where low humidity is the primary risk factor, crested gecko RIs are most commonly associated with constantly damp conditions combined with poor ventilation, or with temperature extremes that suppress immune function. Caught early, RIs respond well to veterinary treatment. Left untreated, they can progress to pneumonia and become life-threatening.
Signs of a Respiratory Infection
- Nasal discharge — clear, cloudy, or mucus-like
- Wheezing, crackling, or clicking sounds when breathing
- Open-mouth breathing or gaping
- Bubbling around the nose or mouth
- Lethargy and loss of appetite
- Labored or visibly effortful breathing
- Tilting the head or body in an unusual posture while breathing
Quick Rule: Healthy crested geckos breathe silently and without visible effort. Any nasal discharge or audible breathing is abnormal and warrants prompt attention.
What Causes Respiratory Infections in Crested Geckos?
- Constantly wet enclosure conditions: The most common husbandry cause. A crested gecko enclosure that never dries between misting sessions creates conditions that favor bacterial and fungal growth. The wet-dry cycle is essential.
- Poor ventilation: Stagnant, humid air without adequate airflow promotes respiratory pathogens. Ensure the enclosure has sufficient ventilation — screen tops and front ventilation panels help maintain airflow.
- Temperature extremes: Prolonged exposure to temperatures outside the recommended range can increase stress and may reduce the gecko's ability to fight infection. Maintain temperatures in the 72–78°F range consistently.
- Stress: Chronic stress from overhandling, inadequate hides, or a high-traffic environment suppresses immunity over time.
- Introduction of a sick animal: RIs can spread between geckos. Always quarantine new animals for 60–90 days before introducing them to your collection.
Is a Respiratory Infection an Emergency?
Early signs — mild nasal discharge, slight lethargy — warrant a vet appointment within a few days. Open-mouth breathing, significant discharge, or visibly labored breathing requires same-day veterinary care. Do not wait to see if it resolves on its own.
Treatment
Respiratory infections in crested geckos require diagnosis and treatment by a reptile veterinarian. Treatment may include antibiotics when a bacterial infection is suspected, along with supportive care based on the underlying cause.
- Ensure temperatures are stable in the 72–78°F range — maintaining appropriate temperatures supports immune function during recovery.
- Improve ventilation — ensure the enclosure is not staying constantly wet.
- Allow the enclosure to dry more fully between misting sessions while still maintaining minimum humidity.
- Keep the enclosure clean and reduce stressors.
- Isolate the gecko from any other reptiles.
- Do not force-feed.
What Not to Do
- Don't attempt to treat a respiratory infection without veterinary diagnosis — bacterial, viral, and fungal RIs require different treatments.
- Don't increase misting thinking it will help — excess moisture is often a contributing cause.
- Don't house the gecko with others during illness.
- Don't delay care if open-mouth breathing or significant discharge is present.
How to Prevent Respiratory Infections
- Maintain the wet-dry humidity cycle — mist in the evening and allow the enclosure to partially dry during the day.
- Ensure the enclosure has adequate ventilation — screen tops and front vents help prevent stagnant air.
- Keep temperatures consistently in the 72–78°F range and never allow sustained temperatures above 80–82°F.
- Minimize stress — provide adequate hides, limit handling frequency, and keep the enclosure in a low-traffic area.
- Quarantine all new geckos for 60–90 days before introducing them to your collection.
- Monitor your gecko regularly — early detection makes treatment far easier.
FAQ
Can low humidity cause a respiratory infection?
Low humidity is more commonly associated with dehydration and shedding problems than respiratory infections in crested geckos. Most respiratory infections develop when poor ventilation combines with constantly damp conditions or other stressors that weaken the immune system.
Can a crested gecko recover from a respiratory infection without a vet?
Improving husbandry — particularly ventilation and the wet-dry cycle — may help in very mild cases, but once a true respiratory infection is suspected, a reptile veterinarian should evaluate the gecko. Early treatment leads to the best outcomes and prevents progression to pneumonia.
Can respiratory infections spread to other crested geckos?
Yes. Isolate any gecko showing RI symptoms immediately and disinfect all shared equipment. Wash hands thoroughly between handling animals. Quarantine new animals before introducing them to an established collection.
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