Crested Gecko Health Problems UK — Signs, Causes & Vet Costs (2026)

Most crested gecko health problems come down to husbandry, not bad luck. Floppy tail syndrome, metabolic bone disease, stuck shed and mouth rot all trace back to something fixable — humidity, calcium, temperature or enclosure layout. The good news for UK keepers is that catching the early signs gives you time to act before a small problem becomes an emergency.

Many first-time owners spot trouble late, and that is rarely their fault — crested geckos hide illness well, and the information online is often US-focused. This guide explains what to watch for, what causes each problem, and when your gecko genuinely needs an exotic vet. Every figure is checked against the Royal Veterinary College's crested gecko care advice and RSPCA reptile welfare guidance.

How to Tell if Your Crested Gecko Is Ill

Crested geckos are crepuscular and naturally still during the day, so "not moving much" is normal. What matters is a change from your gecko's usual pattern. Weigh your gecko weekly with a small digital kitchen scale — weight is the single most reliable health signal, and a steady drop is often the first sign of trouble before any visible symptom appears.

The warning signs below should prompt a closer look. Two or more together, or any that persist beyond a few days, mean it is time to call a vet.

If you are still learning what "normal" looks like for this species, our crested gecko care guide covers baseline behaviour, diet and setup. For a side-by-side look at how this differs from the UK's other popular gecko, see our leopard gecko health problems guide.

Floppy Tail Syndrome (FTS)

Floppy tail syndrome is when the tail droops sideways or flips up over the gecko's back instead of staying in line with the spine. It is one of the most talked-about crested gecko health problems, and it has two main causes that often overlap.

The first is behavioural: crested geckos love to rest head-down on smooth vertical glass. Over time, gravity pulls the tail base in the wrong direction and the pelvis can deform, especially in growing juveniles. The second is nutritional: weak bones from calcium and vitamin D3 deficiency (early MBD) leave the tail unable to hold its natural position.

Mild FTS is cosmetic and the gecko lives normally. More advanced cases can affect how the gecko moves and whether females can pass eggs, so it is worth taking seriously. You cannot reverse a deformed pelvis, but you can stop it progressing by giving your gecko more horizontal resting options — cork bark, sturdy branches and broad-leaved plants — so it stops sleeping flat against the glass. Reducing glass surface with background panels and dense foliage helps too.

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If the tail change appears alongside a wobbly jaw or trembling, treat it as suspected MBD and find an exotic vet near you promptly — addressing the underlying calcium problem matters more than the tail itself.

Metabolic Bone Disease (MBD)

Metabolic bone disease is the most serious common condition in pet crested geckos. It develops when the gecko does not get the right balance of calcium, phosphorus and vitamin D3, so the body draws calcium from the bones to keep functioning. The skeleton softens and weakens.

Early signs are subtle: lethargy, mild trembling, a tendency to shake the head, and slight difficulty climbing. As it advances you may see soft or rubbery lower jaw, bowed or swollen limbs, a kinked spine, twitching and an inability to climb or feed properly. Advanced MBD is painful and can be fatal, but caught early it is very treatable.

Prevention is straightforward and cheap. Dust food with a phosphorus-free calcium powder at most feeds, add a reptile multivitamin with D3 once or twice a week, and provide low-level (2-5%) UVB on a 12-hour cycle, which the RVC and RSPCA now recommend even for this crepuscular species. A complete powdered diet such as Pangea or Repashy already contains balanced calcium and D3, which is why it is the backbone of modern crestie care.

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MBD affects all reptiles kept without proper calcium and lighting. Our deeper guide on reptile metabolic bone disease explains the biology and treatment in full. If you suspect MBD, this is a vet visit, not a wait-and-see — book an appointment and, out of hours, use our 24/7 emergency vet finder.

Stuck Shed (Dysecdysis)

Healthy crested geckos shed in one piece and usually eat the skin, so you may never see it happen. Dysecdysis — stuck shed — is the most common minor problem, and almost always points to humidity that is too low. Crested geckos need at least 50% humidity and ideally 60-80%, with a daily misting cycle that lets the enclosure dry out between sprays.

Watch the toes, tail tip and around the eyes. Retained skin on a toe acts like a tourniquet: it tightens as it dries, cuts off circulation, and can cause the toe to die and drop off. Stuck shed on the tail can trigger the gecko to drop the whole tail.

To treat a mild case at home, raise humidity, add a damp sphagnum moss hide, and give a 10-20 minute lukewarm shallow soak (water no deeper than the gecko's chest). Afterwards, gently roll loose skin off with a damp cotton bud — never pull. If skin remains stuck on toes or eyes after two gentle attempts, see an exotic vet before tissue is lost.

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A reliable digital hygrometer is the cheapest insurance against repeat shedding problems — guessing at humidity is how most stuck sheds start.

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Tail Loss and Why It Won't Grow Back

Here is the single most important fact that surprises new keepers: a crested gecko cannot regrow its tail. Unlike the leopard gecko, which regenerates a stubby replacement, a crestie that drops its tail (a defence response called autotomy) keeps the rounded "frog-butt" look for life.

Geckos drop their tail when grabbed, startled, nipped by a cage mate or stressed during handling. The loss itself is not dangerous — the stump heals quickly and tailless crested geckos breed, climb and live entirely normal lives — but because it is permanent, prevention matters. Never pick a gecko up by the tail, support the whole body when handling, and house adults individually or with great care to avoid nips. If the stump looks red, swollen or weepy after a few days, that suggests infection and warrants a vet check.

For more on temperament and safe handling, our crested gecko species profile and the leopard gecko profile are useful comparisons before you bring one home.

Mouth Rot (Infectious Stomatitis)

Mouth rot is a bacterial infection of the mouth and gums, usually taking hold when a gecko is already stressed or run down by poor husbandry. Signs include a swollen mouth, excess saliva or drooling, dark or reddened gums, cheesy yellow material around the jawline, and reluctance to eat.

This is not a home-treatment condition. Mouth rot needs a vet to clean the area, prescribe antibiotics and identify what weakened the gecko in the first place — often chronically low temperatures or a dirty enclosure. Left untreated it can spread to the jawbone and become life-threatening. Keeping the enclosure clean with a reptile-safe disinfectant and maintaining correct temperatures is the best prevention.

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Impaction

Impaction is a blockage of the gut, most often caused by a young gecko swallowing loose substrate while feeding, or by feeding insects that are too large. A safe rule is to feed insects no wider than the space between the gecko's eyes. Signs include a swollen belly, straining, no droppings for an unusually long time, and loss of appetite.

The simplest prevention is to avoid loose particle substrate for juveniles — use kitchen roll, reptile carpet or a bioactive setup with established cleanup crews instead. A lukewarm soak can sometimes help a mild case pass, but a gecko that is straining, bloated or not passing waste needs veterinary assessment, as severe impaction can require intervention.

Respiratory Infections

Respiratory infections are less common in crested geckos than in tropical species, but they occur, usually when an enclosure is kept too cold or too damp without airflow. Look for open-mouth breathing, wheezing or clicking sounds, bubbles or mucus around the nose and mouth, and lethargy.

Because crested geckos thrive at ordinary UK room temperatures (22-26°C), the usual cause is a chilly room in winter combined with stagnant, over-misted air. Improve ventilation, confirm temperatures with a reliable thermometer, and see a vet — respiratory infections need antibiotics and rarely clear up on their own.

Dehydration and Weight Loss

Crested geckos drink water droplets from leaves and glass after misting rather than from a bowl, so a gecko in a too-dry enclosure can quietly become dehydrated. Signs include wrinkled or "tented" skin that is slow to flatten, sunken eyes, sticky saliva and lethargy. Persistent weight loss often travels with dehydration and poor appetite.

Mist at least once or twice daily so the gecko has droplets to drink, keep a shallow water dish available, and re-check your humidity readings. If a gecko stays underweight despite good husbandry, ask a vet to check for parasites or an underlying problem — a faecal screen is inexpensive and often revealing. Our guide to reptile vets near you explains how to find a clinic that handles geckos.

Prevention: Husbandry That Stops Problems

Almost every problem above is prevented by the same handful of habits. Get these right and serious illness becomes rare:

• Humidity 60-80% with daily misting and a hygrometer to confirm it — the single biggest factor in shedding and hydration.
• Temperature 22-26°C, with a cool end around 20°C; most UK homes manage this without strong heating, but check in winter.
• Calcium at most feeds and a D3 multivitamin once or twice weekly, plus low-level UVB for healthy bones.
• A tall, planted enclosure with cork bark, branches and broad leaves so the gecko rests horizontally — protecting against floppy tail.
• No loose substrate for juveniles, and appropriately sized food to prevent impaction.
• Weekly weigh-ins and a clean enclosure to catch problems before they show.

For the full setup specification — enclosure size, lighting, diet brands and UK costs — work through our crested gecko care guide. Spending a little more on getting husbandry right is always cheaper than treating preventable illness.

When to See an Exotic Vet (and Costs)

Crested geckos hide illness, so by the time symptoms are obvious the problem is often well established. See an exotic vet promptly if your gecko shows a wobbly jaw or trembling, has refused food for over two weeks with weight loss, has stuck shed that won't clear, shows mouth swelling or drooling, or is straining and bloated.

In 2026, a first-opinion exotic consultation in the UK costs roughly £40-£75, with specialist referral consultations from £125 up to £245 at centres like the RVC. Diagnostics, medication and procedures are charged on top. Our exotic vet cost guide breaks down what to expect by region and treatment. The key point: early visits are almost always far cheaper than treating an advanced case.

Not every vet is comfortable with reptiles, so it pays to find one with exotic experience before you have an emergency. You can find an RCVS-verified exotic vet near you through our directory, and for out-of-hours crises use the 24/7 emergency vet finder. Verify a clinic's registration on the RCVS Find a Vet service if you want to double-check credentials.

Frequently Asked Questions

Worried about your gecko right now? Find an RCVS-verified exotic vet through our directory today. For an out-of-hours emergency, use our 24/7 emergency vet finder.

More guides: Crested Gecko Care Guide · Leopard Gecko Health Problems · Reptile Vet Near Me UK