The exact etiology of spasmodic dysphonia is unknown, so there is
no specific measures for prevention.
However, in some cases, onset has been reported to occur subsequent
to upper respiratory infections and/or vocal abuse.
Therefore, it is reasonable to assume that maintaining good vocal
hygiene, including adequate hydration, and avoiding continued vocal stress, especially when the vocal mechanism is in a weakened
state are reasonable precautions until more is known.