Hi tookeeper. Sorry my link didn't work Apparently that site was revamped so I did a search and have come up with the following tidbits of information.....Hope and pray something will help you or other poultry keeper.This question raised on the link is if the duck has been accidentally...
She may have had a head injury, I'm not sure, but be careful on addition of vitamins, better to err on the low side. Also she needs a waterer that she can dip her beak into.
http://www.michigan.gov/dnr/0,1607,7-153-10370_12150_12220-26644--,00.html is a good reference to this disease...