Navigable waters of the United States are those waters that are subject to the ebb and flow of the tide and/or are presently used, or have been used in the past, or may be susceptible for use to transport interstate or foreign commerce.
The Signs & Symptoms of Friedreich's Ataxia are: 1  loss of coordination (ataxia) in the arms and legs. 2  fatigue - energy deprivation and muscle loss.  vision impairment, hearing loss, and slurred speech.
Friedreich ataxia affects men and women equally, and affects one in about every 40,000 people in the US. A quarter of patients show symptoms after the age of 25; this is known as late-onset FRDA (LOFA).