On Sat, 6 Jun 2015 14:19:30 -0700 (PDT), trader_4
wrote:

On Saturday, June 6, 2015 at 5:13:11 PM UTC-4, T wrote:
Hi All,

It is time to paint my bathroom wall. Do I just prime
or do I both sand and prime?

The current paint it textured, so sanding would only affect
about 40%. And I have all the pealing spot sanded flat
already and waiting Spackle.

Many thanks,
-T

If the existing paint is textured and only the peeling spots
have been sanded, then I don't see how the texture is going
to match unless it's all sanded.

+1 Wash a textured wall down with TSP (red box, the real stuff), then
prime and paint. As you say. Sanded texture walls cause fits.

Or skim coat the entire bathroom with joint compound.