What is Pustules?

An acne pustule is a type of pimple.

These bulging patches of skin are pores that have become clogged with

1. pus,
2. sebum (oil),
3. cell debris.

They may also be called whiteheads, blemishes, and zits.

Though pustules can appear anywhere on  body, they’re usually found on  face, neck, shoulders, and back.