Prolapse in Mediterranean House Geckos
At 4-5 inches total length with famously thin, translucent skin, this species has the least tissue margin of any gecko covered on this site — a keeper who spots protruding tissue should move faster here than for a leopard gecko or crested gecko, not treat it the same.
Possible causes
- Impaction from prey caught during an active hunting strike near a light source, where loose grit or debris can be swallowed along with an insect
- Retained hard-shelled eggs — this species lays in fixed pairs, and a difficult lay is a realistic cause in a mature female
- A parasite load, more likely in a wild-caught or newly imported individual than in a captive-bred line
- Dehydration, which shows up faster here than in a larger gecko given this species' minimal body reserve
What to do
- Transfer the gecko to a small, smooth container with a barely damp paper towel, not the loose or fibrous decor typical of its usual enclosure
- Avoid handling beyond what's needed to move it — this species drops its tail under far less provocation than most geckos, and added stress right now serves no purpose
- Note whether this is a female that's recently shown restlessness or a swollen abdomen consistent with a pending clutch
- Call ahead so the clinic knows to expect a very small-bodied patient
Mediterranean house geckos are the smallest, thinnest-skinned reptile most keepers on this site will ever house, and that translucent, delicate skin — the same trait that makes this species prone to easy tail loss and minor handling injuries generally — applies with particular force to prolapsed tissue, which can dry out and become unsalvageable here noticeably faster than in a bulkier gecko like a leopard or crested gecko.
Impaction is a realistic contributor given how this species actually hunts: in the wild it ambushes insects drawn to lights around buildings, and in captivity a fast strike at a cricket or roach near loose or gritty substrate can bring in debris along with the meal — feeding from a shallow dish rather than directly off particulate substrate closes off this pathway almost entirely.
Females of this species lay eggs in fixed pairs with a hard, calcified shell, often gluing them to a chosen surface rather than burying them the way a burrowing lizard would — a female that's been restless and hasn't produced an expected pair of eggs after showing clear pre-lay behavior (abdominal swelling, reduced appetite) may be experiencing a difficult lay, and that's a meaningful contributor to prolapse in a mature female of this species.
Once tissue is visibly prolapsed, a home repositioning attempt is a worse idea here than in almost any other reptile on this site, simply because the tissue itself is thinner and easier to tear — this is squarely a same-day vet situation, not a wait-and-watch one.
A vet will sedate the gecko carefully, given its very small body mass, to clean and reduce the tissue, then investigate the likely cause — checking for a retained egg pair, assessing hydration, or considering a parasite screen if the history suggests one.
Recovery in an otherwise healthy individual is generally good once the underlying cause is addressed, though a keeper should expect a longer, more closely supervised recovery window than with a larger species, simply because this gecko has so much less physiological reserve to draw on during healing.
It's worth distinguishing genuine prolapse from the brief, self-limiting tissue sometimes visible at the exact moment of normal defecation, or from hemipenal eversion in a male during breeding activity — both resolve within a minute or two on their own, while true prolapsed tissue persists and tends to swell.
A gecko that's had one impaction-related episode should go back to feeding exclusively from a dish rather than off substrate going forward — this is a low-effort, permanent fix given how directly this species' hunting-strike feeding style connects to the risk in the first place.
A female with a history of one difficult lay is worth monitoring more closely during any future reproductive cycle, since this species can continue laying periodically throughout the warmer months, and a keeper aware of an ongoing cycle benefits from having a vet relationship already established rather than starting from scratch during a second episode.
Because this species is naturalized and genuinely common outdoors around porch lights across much of the southern US, some keepers underestimate how differently a captive individual's fragile biology behaves compared with the tough, wild commensal geckos chirping around a porch light — the wild population's resilience doesn't translate to a captive individual tolerating delayed care any better.
A second episode in the same gecko, after an apparently successful first treatment, points to something unresolved — an ongoing substrate-feeding habit that never actually changed, or a parasite load never screened for — and deserves a fuller vet conversation rather than a repeat emergency response with no follow-up.
Preventing this long-term
Feeding exclusively from a shallow dish rather than allowing hunting strikes directly on loose substrate removes this species' main impaction pathway.
Providing a suitable, textured surface for a mature female to lay her paired eggs on reduces the odds of a genuinely difficult lay.
Routine fecal screening for any wild-caught or recently imported individual catches a parasite burden before it contributes to straining.
Consistent, gentle misting supports hydration in a species with unusually little body reserve to fall back on if water access lapses.
Minimal, careful handling generally, given how easily this species drops its tail and how thin its skin is, reduces incidental stress and injury that can compound an underlying health issue.
When to see a vet
This species' tiny size means there's very little room for delay — call an exotics vet the same day tissue is seen rather than monitoring overnight.
This is general educational care information, not veterinary diagnosis. For a sick or injured animal, see a qualified exotic-animal vet promptly — especially for anything acute (not eating combined with lethargy, breathing changes, bleeding, or any sudden behavior change). Nothing on this page substitutes for an in-person exam.
Other Mediterranean House Gecko problems
- Mediterranean House Gecko Not Eating
- Retained Shed in Mediterranean House Geckos
- Respiratory Infection in Mediterranean House Geckos
- Metabolic Bone Disease in Mediterranean House Geckos
- Impaction in Mediterranean House Geckos
- Tail Rot in Mediterranean House Geckos
- Mouth Rot in Mediterranean House Geckos
- Internal Parasites in Mediterranean House Geckos
- External Mites in Mediterranean House Geckos
- Egg Binding in Mediterranean House Geckos
- Lethargy in Mediterranean House Geckos
- Weight Loss in Mediterranean House Geckos
- Handling Stress in Mediterranean House Geckos