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.
Symptoms of Ataxia. Gait/Posture abnormalities - Difficulty maintaining normal upright posture, balance, coordinated walking, and running. Unsteady gait, staggering, tripping, falling, unsteadiness on stairs or maintaining balance on moving platforms, such as escalators or boats. These difficulties are often due to cerebellar dysfunction.