Board Thread:Naruto Discussions/@comment-3965545-20160202201023/@comment-142748-20160202225226

DarioAD wrote: Itachi was sick since in Part I, but we don't know when he got the illness, tough we just have known it in Part II. But the most important thing in Obito's speech is just the deal, not the sickness. It was never said Itachi was sick since Part I. Not once was it ever stated. ITs an assumption that he was sick in Part I. Bob1200 wrote: Itachi's Sickness Was Explained In The Naruto Jinraiden Novel To Be Caused By Itachi Awakening His Mangekyou Sharingan, As A Rare Side Effect Of Said Awakening Happening. Itachi Had Eye Drops To Subside It For A Long While, But He Had An Incomplete Version Of The Medicine, So It Wasn't Cured. Sasuke Almost Had The Same Sickness, But He Got The Completed Version Of The Medicine Shortly Before His MS Was Awakened Fully (Or Maybe It Was Shortly After, I Forget). But It Was Stated That Itachi Using His Mangekyou Made His Condition Worse Along With The Disease. I don't think that's usable. Madara nor his brother ever got sick from their MS, nor did Obito, Shisui or Kakashi. It contradicts what we know.