Why does RFK sound like that? Is RFK sick?

If you're watching the Senate hearings today, you might be wondering what's wrong with Robert F. Kennedy Jr.'s voice.

According to dysphonia.org, Kennedy has spasmodic dysphonia. Here's what the voice disorder is:

Spasmodic Dysphonia

Spasmodic dysphonia is a chronic neurological voice disorder and a focal laryngeal dystonia. It results in involuntary spasms of the muscles that open or close the vocal folds, causing a voice that presents with breaks and strained/strangled quality or breathy quality, depending on the type of spasmodic dysphonia (adductor or abductor).

What is the cause of Spasmodic Dysphonia?

Spasmodic dysphonia is known to be neurological in origin, but currently, the exact cause is not known. Investigation into the specific causes of the disorder is ongoing, and different areas of the brain may be involved. Researchers are looking at the basal ganglia, which helps to regulate movement; the cerebellum, which helps to control balance; along with the cortex which initiates movement and senses sensation. There may also be genetic component as genes have been identified in other forms of dystonia.