United Kingdom, June 25 -- Joe Manganiello spent "months and months heavily medicated" during a lengthy battle with a "deadly mystery illness".

The Magic Mike actor has written a memoir, Bloodlines, in which he will detail "a cascade of autoimmune-related illnesses" which affected his skin, thyroid, eyes, lungs and digestive system but before the release of the tome, he has reflected on the years of unsuccessful treatments he undertook, which left him "mutilated" and at times unable to walk.

He said in an Instagram reel: "For the better part of the past decade - most people don't know this - but I suffered in silence, battling a deadly mystery illness, and other than a very small circle of family and friends, I hid it from the rest of t...