Since you asked for a response from someone who has a child with this, you are limiting who you want answers from even though I can answer your question. I am a child of a mother who had Spinocerebellar Ataxia type 2 (SCA2), but I am 37 now and I also have SCA2. My child is 16 and he has not been DNA tested for it nor has he shown any symptoms. There are many different types of ataxia. Did the parents (your grandparents) of your aunt and uncle have ataxia too? If so then you might have a dominant form of ataxia in your family. First I would find out from their neurologist(s) as much as you can about it (the name, the type, etc), and if he or she thinks you should be concerned for yourself and your children. From there, contact a neurologist for yourself and/or your children. For more information on Ataxia, please visit the National Ataxia Foundation's website at www.ataxia.org.