Joe Manganiello is looking back at a difficult chapter.

The True Blood alum shared a rare glimpse into navigating his nearly decade-long health battle due to autoimmune-related illnesses while in the public eye, which led to chronic pain and an amputation.

“Joe Manganiello seemed to have it all: a soaring career, a new marriage, and what many considered, the best physique in Hollywood,” the official synopsis for the memoir, which will release Oct. 13, began. “Then, without warning, his body began to fail him.”

“A cascade of autoimmune-related illnesses attacked his skin, thyroid, eyes, lungs, and digestive system, plunging him into a seven-year battle,” it continued, “plagued by chronic pain, a life-saving organ amputation, existential crisis and a prolonged fight for survival that left doctors with few answers and no clear explanation.”

Manganiello’s health struggles led him to unconventional methods for guidance, including “shamans, pagan rituals, ancient myths, long-lost family records, and the rebirth of his own spirituality.”