I have truncal ataxia plus an ataxic gait. So I have been reading up about it, and found this link. Scroll down to the bottom and you will find lots of short articles about the various ataxia's (but of course, not truncal ataxia, there is never much about that). I have lesions on my cerebellum which cause ataxia, but I also have sensory ataxia so I am a bit of a mix.
http://www.wrongdiagnosis.com/symptoms/walking_symptoms/book-causes-8a.htm
happy reading
http://www.wrongdiagnosis.com/symptoms/walking_symptoms/book-causes-8a.htm
happy reading