Does Darth Vader suffer from Split Personality disorder?

Vader saw his son crying, and knew it must have been at the horror of the face the boy beheld.

It intensified, momentarily, Vader's own sense of anguish - to his crimes, now, he added guilt at the imagined repugnance of his appearance. But then this brought him to mind of the way he used to look - striking, and grand, with a wry tilt to his brow that hinted of invincibility and took in all of life with a wink. Yes, that was how he'd looked once.

And this memory brought a wave of other memories with it. Memories of brotherhood, and home. His dear wife. The freedom of deep space. Obi-Wan.

Obi-Wan, his friend ... and how that friendship had turned. Turned, he knew not how - but got injected, nonetheless, with some uncaring virulence that festered, until ... hold. These were memories he wanted none of, not now. Memories of molten lava, crawling up his back ... no.

This boy had pulled him from that pit - here, now, with this act. This boy was good.

The boy was good, and the boy had come from him - so there must have been good in him, too. He smiled up again at his son, and for the first time, loved him. And for the first time in many long years, loved himself again, as well.

Suddenly he smelled something - flared his nostrils, sniffed once more. Wildflowers, that was what it was. Just blooming; it must be spring.

And there was thunder - he cocked his head, strained his ears. Yes, spring thunder, for a spring rain. To make the flowers bloom.