All the time. I have night sweats at least an average of 4-5 nights a week. Some nights are worse than others.
I have developed a system to try and adapt. I have 3 heavy weight terry cloth robes, which usually absorb the sweat well enough that I can rest the remainder of the night. However, sometimes on gets damp or soaked enough where I have a secondary robe on hand. Once I went through three robes before the morning had arrived.
That particular day I rested, but failed to replenish my electrolytes enough to prevent problems. By 4:30 PM that day I totally began to crash. I couldn't figure it out. I was extremely dizzy, nausea, vomiting, having cold sweats, and I could not walk or stand without risking falling hard. I thought I was at the end, and was going to have my wife rush me to the ER (at $500 a visit), before I had realized I was electrolyte crashing. My wife gave me about 7 Power Gels made by Power Bar, and I drank something like 12 Emer'gen-C powder packets made by Alacer (you can get them at WHOLE FOODS MARKET), and I only then began to recover. By 9 PM I felt just about normal.
This, hemoptosys, and fevers are the worst about CF. I think I have adapted to the congestion for the most part (at least so far...). I seem to get low-grade fevers almost as much. Even after 2week hospitalizations in which I am discharged feeling great. A week or two later the mother load comes back.
Best of luck who experience the same.
Grendel