Common Leopard Gecko Health Issues and What to Watch For

Leopard geckos are generally hardy, but a few conditions come up often enough that every owner should know the warning signs. One of them, covered below, has no cure, which makes early recognition genuinely important.

Metabolic Bone Disease (MBD)

Common in leopard geckos partly because they're so often kept without UVB, without proper calcium supplementation, or without adequate heat, all three of which contribute, though it's largely preventable once heat and calcium are handled correctly. Watch for pathological fractures, twisted or bent limbs, a soft or deformed jaw (sometimes called "rubber jaw"), tremors, difficulty eating, lethargy, and weight loss.

If you suspect MBD, handle your gecko extremely gently and remove any climbing decor, a fall that wouldn't normally matter can fracture weakened bones. See a vet promptly. Leopard geckos appear to rely heavily on UVB and correct basking temperature to process calcium properly, not diet supplementation alone, which is part of why low-level UVB is worth providing even though it's technically optional for this species.

Cryptosporidiosis, Also Called "Stick Tail Disease"

This is the one condition every leopard gecko owner should be able to recognize, because it's severe, highly contagious, and currently has no cure. Leopard geckos are the most commonly diagnosed reptile for this parasite, and it's estimated that around half of captive leopard geckos may carry it, though not all show symptoms right away.

Watch for: a tail that thins out to a "stick," looking emaciated with no fat reserves, general weight loss and emaciation, loss of appetite, passing undigested food, foul-smelling feces, and a bloated or extended belly.

This is diagnosed through a fecal PCR test from a reptile-experienced vet, though false negatives happen, so a single clear test doesn't fully rule it out. The main treatment drug, paromomycin, manages the condition rather than curing it, and mortality for symptomatic stick tail disease runs around 50%. If a gecko doesn't respond well to treatment within a month, the outlook is generally poor.

This is exactly why quarantining any new gecko for 3 to 6 months before introducing it to others matters, since asymptomatic carriers can spread it without showing any signs themselves.

Impaction

Usually caused by ingesting loose substrate, most often sand, or prey that's too large to pass safely. Contributing factors include low basking temperature, dehydration, and parasites. Look for a bloated abdomen, loss of appetite, weight loss, and a lack of normal bowel movements.

Warm baths and gentle belly massage help mild cases. A true blockage may require surgery, which is part of why non-particulate substrate (paper towel, tile) is the safer choice, especially for anyone newer to the hobby.

Shedding Problems (Dysecdysis)

Caused by low humidity or a vitamin A deficiency. The humid hide is the fix for the first. Retained shed builds up around the eyes, toes, and tail tip. Never ignore a constricting band of shed there, since left unaddressed it can cut off circulation badly enough to cause tissue death and lost digits. Never peel off dry, stuck shed. Soak the gecko in shallow lukewarm water first to loosen it. A dedicated humid hide prevents most of this before it starts, and checking the toes, eyes, and tail tip after every shed catches problems early.

Egg Binding (Dystocia)

In females, watch for straining, restlessness, depression, and appetite loss. This can be fatal without intervention, so it's a same-day vet situation, not a wait-and-see one.

Vent or Cloacal Prolapse

Tissue visibly protruding from the vent. This is an emergency, get to a vet immediately.

When to See a Vet

• A thinning "stick" tail combined with weight loss
• Jaw softness or visible deformity
• Tremors
• Any breathing difficulty
• Drooling or pus around the mouth
• Appetite loss that persists more than a few days
• Prolapse
• Retained shed that's swollen, darkened, or won't clear from the eyes or toes

An annual wellness exam is worth doing even for a gecko that seems perfectly healthy. Several of the conditions above, cryptosporidiosis especially, can be present without obvious symptoms until they're advanced.

Sources & Further Reading