This is a multicenter natural history and clinical measure study. Our objectives are to advance clinical care, research and therapeutic approaches in FA through the development and validation of clinical outcome measures in FA, collection of quantitative serial clinical data on patients and expansion of our established research network. A secondary objective is to build a parallel DNA and RNA repository for use in large scale translational research including modifier gene studies. We wish to also enroll control subjects for a hearing test and sample collection to compare to data from FA patients.