My understanding of Gout is that there are 2 different types, my CRV calls them "Acute" and "Chronic", but officially they are called "PseudoGout" and "Visceral Gout". Neither has anything to do with Arthritis to the best of my knowledge, as they both present exactly the same way, with elevated Uric Acid levels, UA crystals in the joints caused by UA supersaturation of the synovial fluid in the joints, and resulting Kidney damage. As far as I know, the difference between "PseudoGout" and "Visceral" Gout is that "Visceral" or "Chronic" Gout is caused by something like Genetics or a natural inability of the body to break down and excrete Uric Acid properly, for whatever reason, and it's a long-term disease, usually life-long, and they have to be on the Allopurinol for the rest of their lives because their bodies will never be able to properly process or excrete Uric Acid. In contrast, "PseudoGout" or "Acute Gout" is caused not by Genetics or something wrong with their bodies that makes them unable to properly process or excrete Uric Acid, but rather is caused by an external, temporary factor that has caused their Uric Acid levels to skyrocket, and until the external factor is remedied or removed the Gout will continue. However, with PseudoGout, once the external factor that is causing the high Uric Acid levels in the blood or causing the kidneys to be unable to rid the body of Uric Acid is removed or remedied, the Uric Acid levels will normalize with the short-term Allopurinol treatment, and the kidneys will recover, and then the Allopurinol treatment can be stopped, and the patient is fine. And in Bearded Dragons the external factors that usually cause "PseudoGout" or "Acute Gout" are either related to poor husbandry, or due to the Dragon being fed a diet that is extremely high in Purine and the kidneys are unable to handle this. Recently this seems to be the cause of most cases of PseudoGout in young dragons because of the high-protein feeds that vendors are giving to their live insects, specifically cheap feeds that are extremely high in Purine Protein sources, such as Dog Food and certain commercially available Feeder Insect foods. I believe that this is the main cause for the current PseudoGout "Epidemic" we're seeing in young dragons. I call it an "epidemic" only because it seems like there are more and more cases of Gout in babies and juveniles, and most of these are being fed Dubia Roaches and Crickets that are being fed Dog Food, Cat Food, and these other high-protein feeds. I recall an Exotics Vet recently telling someone that their dragon couldn't have Gout because it's "extremely uncommon for young Bearded Dragons to develop Gout, we just don't see Gout in Dragons this young at all", and when they posted that their Exotics Vet told them this and used this as the basis for not even testing for Gout and completely ruling it out entirely based on the Dragon's age, my first thought was "Wow, these Vets need to get online to the forums and count the number of cases of Gout in baby and juvenile dragons, they'd get a wake-up call".
This is my understanding of the difference, Tracie can certainly correct me if I'm wrong, which I may be, but I'm fairly certain that this is correct.