Is this mold growing on my shower ceiling?
I doubt that scraping paint of the celling would upset anyone, unless someone has hearing devices on your celling :) I suggest that you scrap it off, clean the surface with bleach or something like that and then repaint it. But the real question is what is causing this mold? My first guess is that you are not ventilating, or not ventilating bathroom enough and this is causing humidity, leading to mold. If paint on the wall is washable, maybe you can go without scraping, just with bleaching and venting.