Sometimes vets will throw everything at the wall to see what sticks. Seems like they'll mention everything that a snake MIGHT have at any point in it's life, before they figure out what's actually wrong.
I once had a vet ask me if seahorses were actually real, then five minutes later tell me i had to bring the sick seahorse in so she could examine it before she would give me meds for it. I asked her what exactly she would be able to tell me since she not only didn't know seahorse specific issues, but didn't even know they actually EXISTED ten minutes ago.