I'm also concerned with mine! (Sorry to jump on your post,new to the page having troubles figuring it out. But extremely worried about my veiled)
I have a 5 month old veiled and he has been very strange, he just lays weak at the top. He won't go to his food dish and only eats when I hold him. He isn't drinking as much water either and has some what I think is swelling on his back legs and he walks really weak! Any advise or answers would be greatly appreciated.