my father had fluid on his lungs and started levaquin for 12 days...

my father had fluid on his lungs and started levaquin for 12 days. He took himself off of it on the 12th day after severe swelling in his hands, feet and joints. He's been to every doctor in austin since and no one can seem to explain it to us. He is very depressed, has trouble moving, sleeps all the time, severe joint pain and swelling of his hands and feet. No one here seems to be saying anything about the side effects going away. Someone please tell me that this will get better. Is there any hope of it getting better? Has anyone recovered?