please help me remember the name of this book

[chainer098]

i read a book awhile back it was about this guy who end up becoming the king of a country. i cant remember alot about the book but i remember that he fell off of a tower and was saved when he turned into a dragon. he then started to look different like his finger nails became jagged and i think that he was able to cast dragons fire from his fingers. i know that not alot to go on but that all i can remember i just remember really enjoying the book. i hope that someone can help me remember. ty

[cancross]

Maybe something in the Dragon Knight series bt Gordon R. Dickson?

http://www.amazon.com/Dragon-Knight-Tor-Book/d p/0812509439/ref=cm_lmf_tit_2

[wendilla]

Was it A hero's burden.

[chainer098]

i checked those two and they wern't it but thanks for trying