I was reading an article on BP magazine's site and it talked about 3 states of BP instead of 2. The 3rd was remission. When I was diagnosed in 1994, what got me in was the almost unrelenting depression. I didn't realize at the time that the short "break" I got from the depression was hypomania. My wife sort of did; she didn't know that's what it was but it was a big part of going in because she disagreed about me being "better". Anyway, in the year before and the 23 years since the diagnosis I have ever had a day without the fog and always feel either depressed or hypomanic. Most common by a wide margin is slightly to moderately depressed.
Anyway, do most people have periods with no symptoms? Does the fog go away?