If the 'room' that has the problem has lots of moisture in it, then if you 'fix' the source of the problem, then your problem may go away.
Moisture sources vary. Check that your dryer isn't vented into the room, and that it's not leaking. If you have a ventless stove/heater, it generates a lot of moisture. (The same for a fireplace.) Lack of insulation, or failing insulation, can cause a temperature contrast problem. Unvented showers, long showers, and poor circulation, are other causes. There are more. Just 'look around'.