Water is the primary cause of flaking paint on bathroom walls and ceilings as well as on exterior walls.
Paint on ceiling in bathroom is peeling.
Peeling paint is a common problem in bathrooms due to the high humidity and moisture found there.
Clean the area thoroughly using a mildew killing cleaner and allow the area to dry.
To keep bathroom paint from peeling run a bathroom fan that s vented to the outside every time you shower or bath and keep it running for 10 15 minutes after you re through to expel as much of the moist air as possible.
The water can originate from a leaking roof gutter flashing or soffit.
This results in bulging cracking and finally peeling.
Your bathroom walls and ceiling probably started peeling in the first place because they weren t properly primed.
To stop future peeling and damage to the wall or ceiling surface reseal the area using paint and primer.
Then using a putty knife wire brush or paint scraper carefully remove all the chipped or peeling paint.