water stain on ceiling 21

https://thewaterceilingcausesmarket.terracolumn.com/posts/understanding-water-on-ceiling-causes-roof-leaks-vs.-condensation

There's a yellowish patch spreading across the ceiling above the shower, like a slow-motion map of a forgotten coastline. The water stain has a dark center with feathery edges, and the paint is starting to bubble and peel around its perimeter. Every time it rains, the spot seems to get a little bit bigger, and I keep meaning to call someone to check the roof for leaks before it causes more damage.