Spasmodic dysphonia is a neurologic condition where patients suffer involuntary voice spasms resulting in an intermittent strangled quality voice with voice breaks or cut-offs (listen to examples here). Spasmodic dysphonia is most often treated with Botox injections to the voicebox. Dr. Chang performs such injections every Friday afternoon.
For more info on spasmodic dysphonia, you can check out the National Spasmodic Dysphonia Association.
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