I know what sunpoisoning is... and I call it that, too
http://www.ecureme.com/emyhealth/data/Sun_Poisoning.asp
Dude, I'd say the SSD Silver Sulfadiazine you're using is the topmost product (prescription) on the market for severe burns...
Otherwise, take care of what you put on your inside... drink LOTS of water, take some ibuprofen for inflammation... (you can take up to 800 milligrams) and get some sun screen.
Fyrflygrl