Conversation so far:
What is closer?
the final two months of the tour.
That March, the band recorded their second album, Closer.
Are there any other interesting aspects about this article?
A lack of sleep and long hours committed to the bands' activities destabilised Curtis's epilepsy, and resultingly, his seizures became almost uncontrollable.

Question: What else happen with his sickness?
Self-contained rewrite: In addition to Epilepsy and Seizures, what else happened with Joy Division's sickness?