Bearded Dragon Impaction: Signs, Causes and What to Do

What impaction is

Impaction is a blockage in the digestive tract, from undigested food, substrate or other material. Chewy’s vet-reviewed guide calls it a medical emergency that needs a reptile vet immediately.¹

Signs to watch for

• No droppings, or straining without producing any¹²
• A swollen or bloated belly, or a hard lump in the abdomen¹
• Loss of appetite¹²
• Lethargy¹²
• Partial paralysis or weakness in the back legs²

Normal adults poop anywhere from once to seven times a week, and babies up to three times a day.¹ See our poop guide for what is normal.

What causes it

ReptiFiles lists the common causes:²

• Dehydration
• A basking spot that is too cool, or poor-quality heating
• Too little UVB
• A poor diet, or eating too much at once
• Underlying illness

Its longer article explains why each matters: dehydration dries out the gut, low temperatures slow digestion, too little vitamin D3 is linked to a slower gut, and too many insects and too little roughage add up.³

Heavy pinworm burdens can rarely block the colon too.⁶

The substrate question

Swallowed substrate can cause a blockage, which is why VCA advises against sand, gravel, wood shavings, walnut shell, corncob and calcium sand.⁵ The RSPCA adds a key detail: calcium sand clogs the gut when temperatures are too low for good digestion.⁴ ReptiFiles goes further and argues that sand alone does not cause impaction in a healthy, well-kept dragon.³

Whichever floor you choose, the setup around it matters. Our substrate guide sets out both views.

What to do

1. Call a reptile vet, especially if your dragon is straining, bloated, weak in the back legs or has not pooped in about a week outside brumation.¹
2. Check the setup while you wait: basking temperature, UVB age and water.²³
3. Do not give any medicine unless a vet tells you to.

ReptiFiles describes a home approach for mild cases: daily 30-minute soaks in lukewarm water with gentle belly massage, and a vet visit if that has not helped within a week.² A week is a long time for a true blockage, so we suggest you ask your vet before relying on soaks.

Prevention

• Keep a shallow dish of fresh water available at all times.⁴
• Keep the basking spot at its target temperature.²³
• Replace the UVB lamp every six months or as the maker directs.²⁵
• Do not overfeed insects, and offer enough greens for roughage.³ See our food list for insect sizes.
• Feed in a dish if you use loose substrate. VCA notes that dragons may swallow substrate while catching insects or eating greens.⁵