Hayden previously spoke of suffering over 20 years of pain following a painful accident on the set of a movie.
The star began her career as an infant, going from adverts to roles in soap operas including One Life To Live and Guiding Light.
When she was 14, she landed a part in Racing Stripes - a 2005 movie about a zebra who believes hes a racehorse, and dreams of competing in a race. In preparation, she spent weeks learning to ride a zebra, and undertook all her own stunts.
However, reflecting on the experience in her memoir, This Is Me: A Reckoning, she recalled the moment she was thrown from the animal - injuring two vertebrae in her neck and suffering a concussion after the incident.
I kept my mouth shut and endured the pain in my back and neck, she wrote, via Entertainment Weekly. Over 20 years later, these injuries still bother me.