Though his time was constantly running out, he kept himself alive through immense willpower, lasting at least long enough to die by Sasuke's hand in order to strengthen him for the road ahead. Fans have theorized that his arm hung out to relieve him of the pain caused by his disease.

Why does Itachi hang his arm?

The primary of them is predicated on Japanese tradition itself, the place the Ronins – samurai who had no masters – used to decorate on this solution to display dishonor of their title. One other idea says that Itachi may really feel some consolation in preserving his left arm straight, as a result of his sickness.

What's wrong with Itachi's arm?

Concluding the news of Why Did Itachi Have His Arm in His Cloak – Itachi fatal disease resulting in hemoptysis. The remarkable fortitude makes Itachi look like a funky character. Sometimes, the real reason to die can be pointed as the visible, which made him when all the fights calmly and at ease.