African Fat-Tailed Gecko Health Guide
African Fat-Tailed Geckos are hardy reptiles that rarely develop health problems when kept in a well-maintained enclosure. Most health problems seen in captive African Fat-Tailed Geckos are linked to husbandry errors — incorrect temperatures, low humidity, poor supplementation, or inadequate hides. Fix the husbandry, and most problems resolve or never occur.
This guide covers the most common health conditions, how to recognize them, what causes them, and when to seek veterinary care.
For full care context, see the African Fat-Tailed Gecko Care Guide.
Signs of a Healthy African Fat-Tailed Gecko
- Clear, alert eyes (except during pre-shed when they may appear milky)
- Smooth, intact scales with no retained shed, wounds, or discoloration
- Consistent body weight — slightly rounded body without visible spine or ribs
- Thick, well-filled tail (fat reserves intact)
- Regular feeding and normal stools
- Active at dusk and dawn; resting during the day
- Clean vent with no swelling or discharge
Common Health Issues
1. Retained Shed (Dysecdysis)
What it is: Incomplete shedding where pieces of old skin remain attached, most commonly around the toes, tail tip, and eyes.
Cause: Almost always insufficient humidity or no humid hide. AFTs require 50–70% ambient humidity and a humid hide at 80–90% — this is the most common health issue in AFTs kept at Leopard Gecko humidity levels.
Symptoms: Visible patches of dull, gray skin after a shed; constricted toes; cloudy eye caps that don't clear after shed.
Treatment: Soak the gecko in shallow lukewarm water for 10–15 minutes, then gently remove retained shed with a damp cotton swab. Never pull forcefully. Retained eye caps should be addressed by a vet if they don't release after a soak.
Prevention: Maintain proper humidity and always provide a damp humid hide. See the Heating and Humidity Guide and Shedding Guide.
2. Metabolic Bone Disease (MBD)
What it is: A progressive condition caused by calcium and/or vitamin D3 deficiency that weakens bones and disrupts muscle function.
Cause: Inadequate calcium supplementation, insufficient D3 (from supplements or UVB), or an imbalanced diet.
Symptoms: Rubbery or bent limbs, difficulty walking, tremors or twitching, swollen jaw, lethargy, loss of appetite. In advanced cases, spontaneous fractures.
Treatment: Mild cases can be reversed with corrected supplementation. Moderate to severe cases require veterinary intervention — do not attempt to treat advanced MBD at home.
Prevention: Dust prey with calcium at every feeding and a multivitamin every 2–4 feedings. See the Best Calcium Supplements for Reptiles and Best Vitamin Supplements for Reptiles.
3. Respiratory Infection (RI)
What it is: A bacterial or viral infection of the respiratory tract.
Cause: Cold, damp conditions — note that this is different from appropriate AFT humidity. The risk comes from temperatures that are too low combined with moisture, not from maintaining the correct 50–70% ambient humidity in a properly heated enclosure.
Symptoms: Wheezing or clicking sounds when breathing, mucus around the mouth or nostrils, open-mouth breathing, lethargy, loss of appetite.
Treatment: Respiratory infections can progress quickly in reptiles. Veterinary care is required — antibiotics are typically prescribed. Do not attempt to treat at home.
Prevention: Maintain correct temperatures (warm side surface 88–92°F, nighttime low no lower than 68°F) and ensure the enclosure is not cold and damp simultaneously.
4. Parasites
What it is: Internal (worms, protozoa) or external (mites) parasites.
Cause: Far more common in wild-caught animals. Captive-bred AFTs from reputable breeders are generally parasite-free, but can acquire parasites from contaminated feeder insects or shared equipment.
Symptoms (internal): Weight loss despite eating, abnormal or foul-smelling stools, lethargy, bloating.
Symptoms (mites): Tiny moving dots on the gecko or in the enclosure, excessive soaking, restlessness, visible irritation around the eyes and vent.
Treatment: Requires veterinary diagnosis and treatment. Mite infestations require full enclosure disinfection alongside treatment of the gecko.
5. Cryptosporidiosis (Crypto)
What it is: A protozoan infection caused by Cryptosporidium varanii (formerly C. saurophilum), sometimes called “wasting disease.”
Cause: Ingestion of contaminated feces, water, or prey. Highly contagious between reptiles.
Symptoms: Progressive weight loss, regurgitation, a characteristic “stick tail” appearance as fat reserves are depleted despite continued eating.
Treatment: There is no reliable cure. Management focuses on supportive care. Infected animals should be strictly isolated. Consult a reptile vet immediately if crypto is suspected.
6. Egg Binding (Dystocia)
What it is: A condition in which a gravid female is unable to pass her eggs.
Cause: Inadequate laying site, calcium deficiency, dehydration, or eggs that are too large.
Symptoms: Visible straining, restlessness, loss of appetite in a gravid female, distended abdomen that does not resolve after the expected laying period.
Treatment: Veterinary emergency. Do not attempt to assist egg laying at home.
Prevention: Always provide a laying box with moist substrate for gravid females. Maintain proper calcium supplementation.
7. Tail Loss (Autotomy)
What it is: AFTs, like many geckos, can voluntarily drop their tail as a defense mechanism. The tail will regenerate, but the regrown tail is typically shorter, rounder, and cartilaginous rather than bony.
Cause: Extreme stress, rough handling, or being grabbed by the tail.
Treatment: Keep the enclosure clean and the wound site dry. Avoid handling until the wound has healed. Monitor for infection. The tail will regenerate on its own — no intervention is typically needed unless the wound becomes infected.
Prevention: Never grab an AFT by the tail. Always support the full body during handling.
Preventing Health Problems
The best health plan is a correct husbandry checklist:
- ✅ Warm side surface: 88–92°F (verified with a temperature gun)
- ✅ Cool side: 72–76°F
- ✅ Ambient humidity: 50–70%
- ✅ Humid hide always damp and available on the warm side
- ✅ Calcium supplementation at every feeding
- ✅ Multivitamin every 2–4 feedings
- ✅ Three hides minimum (warm dry, cool dry, warm humid)
- ✅ Fresh water available at all times
- ✅ Uneaten insects removed within 15–20 minutes
- ✅ Annual vet check recommended for long-term keepers
FAQs
How do I know if my AFT is sick or just hiding?
AFTs are naturally secretive and spend most of their time in hides — this is normal. A sick gecko typically shows additional signs: weight loss, abnormal posture, discharge, labored breathing, or failure to eat over an extended period. A gecko that hides but comes out at dusk, maintains body weight, and sheds cleanly is almost certainly healthy.
My AFT has a lump on its body. What could it be?
Lumps can indicate retained eggs, abscesses, tumors, or parasitic cysts. Any unexplained lump should be evaluated by a reptile vet — do not attempt to drain or treat at home.
My AFT's tail is getting thinner. Should I be worried?
A thinning tail is one of the most reliable signs that something is wrong. It indicates the gecko is drawing on fat reserves, which happens during prolonged illness, parasitic infection, or crypto. If the tail is visibly thinner than normal and the gecko is not eating, consult a vet promptly.