There are two types of Bearded Dragons Parasites, Internal and External; both shouldn’t be taken lightly as they can cause a variety of problems within your beardie sometimes your entire collection of reptiles!
The worst of the parasites will be mites. They are external parasites that feed through the skin of your bearded dragons anchoring themselves in with hook-like mouthparts and legs, after they have taken their blood meal they will drop off your lizard and lay their eggs in the substrate and furnishings of your vivarium, bringing round a whole new wave of vicious blood-sucking mites.
The best way to rid your bearded dragon (hopefully not your whole collection) of mites, take your bearded dragon and bathe him thoroughly until you are certain its ridden of mites, take its house and do the same. Once your beardie is in quarantine remove all substrate, making sure it’s properly disposed of outside, All furnishings that can be discarded throw away.
The remaining stones, branches, and housing, etc should be put in a 1/10 bleach to water solution for 12 or more hours and leave to air for a few days to destroy all eggs and mites. Use the same solution to clean the vivarium letting it soak for the same time then air out for 2-3 days. After this time return everything to the vivarium while looking for any signs of mites, That should have got rid of them.
To prevent bearded dragon parasites like mites make sure you clean your vivarium regularly and when doing so look for signs of mites, you should check your bearded dragon when you handle it as well.
If you have a lot of reptiles checking them regularly is vital to ensure parasites don’t spread through your entire collection as ridding all reptiles and enclosures will be a long, arduous task
Internal parasites can cause many problems, but luckily enough they usually come from dirty surroundings or from other animals. Usually other reptiles have worms when they are imported from the wild and passed to others by being housed in the same enclosures.
Bearded dragon parasites like internal ones can’t be cured by sterilization, the symptoms of internal parasites are; bloated body, diarrhea, and blood in feces, vomiting, unexplained weight loss, sluggish and lazy, discoloration and if you actually see the worms in the feces.
If you see any of these symptoms in your bearded dragon, take them to a reptile vet as soon as you can as internal parasites can cause your lizard serious harm. Your vet will prescribe medication in the form of oral medication or injections. Cleaning out the cage as soon as you start the medication is essential.