Re: I have ice on my interior plaster walls! How do I fix it? Help!!
No insulation + high humidity in house + prolonged cold spells + no room heat reaching surface of walls = dew point occurring on the wall surface and freezing on contact; exactly the way frost will form on window panes.
When I was a kid I would look at the screw head on our front door that attached the bottom of the iron door handle; if it was 10 below, that screw head would have a thick frost buildup on it, inside the room!
Unless your son has a bedwetting problem (sorry, poor taste), the solution is to move the mattress away from the wall so air can circulate, warming the wall above dew point.
Remove not the ancient landmark, which your fathers have set.