Against Medical Advice: A True Story is a New York Times Bestselling non-fiction book by James Patterson and Hal Friedman,[1] detailing the illness and medical struggles of Cory Friedman and his family.

The book shows how Cory began exhibiting uncontrollable urges to perform body tics and say various things at the age of five years.

Since he is unable to control his actions due to having OCD, Tourette syndrome, and an anxiety disorder, Cory experienced ridicule in his life and had troubles living the everyday life of a child, which is exacerbated by ill medical treatment.

[5] In 2010, Cory Friedman published a young adult version of Against Medical Advice with Patterson, entitled Med Head: My Knock-Down Drag-Out Drugged-Up Battle with My Brain.

[7][8] Diário Digital gave a positive review for Against Medical Advice, calling it "a touching story of courage, determination and the ultimate triumph of a family facing a desperate situation".