* Memory Loss: In the Chamber of Secrets, Lockhart attempts to use a memory charm on Harry and Ron, but it backfires. He ends up wiping his own memory, becoming an empty shell of his former self.
* St. Mungo's: He is taken to St. Mungo's Hospital for Magical Maladies and Injuries, where he remains under the care of Madam Malkin.
* No Cure: There is no indication that his memory is ever restored. It's implied that he's unlikely to be able to regain his memories, remaining in a state of blissful ignorance about his own past.
In conclusion, Lockhart's end is tragic. He loses his fame, his career, and most importantly, his memories. While he's still alive, he's effectively a lost soul, a stark contrast to the self-absorbed, fame-hungry wizard he once was.