why does rfk's voice sound like that

Robert F. Kennedy Jr.'s distinctive voice is caused by a rare neurological disorder called spasmodic dysphonia. This condition causes involuntary spasms in the muscles that control the vocal cords, leading to breaks and a strained, shaky, or breathy quality in the voice. Kennedy has had this condition for decades, having been diagnosed in his 40s, and it results in a tremble or quiver when he speaks. The exact cause of spasmodic dysphonia is unknown, but it involves abnormal nerve signaling in the brain areas that control muscle movement. Treatments like botulinum toxin injections (Botox) can help alleviate symptoms, although Kennedy has found them not a perfect fit for him. The disorder affects roughly 50,000 people in North America and significantly impacts voice control without affecting overall health.