Unexplained Night sweats

I have been experiencing night sweat every night basically ever since my diagnosis with NMO. Im wondering have anyone else experienced un explained night sweats. I have had all kind of test and seen all kinds of specialists and no one can seem to find the root cause. This has really been a problem for me and an exhausting experience!!!waking up in the middle of the night the night soaked and drenched.Has anyone else experienced this?