The most common types are:
Whiteheads. These are pimples that stay under the surface of the skin.
Blackheads. These pimples rise to the skin’s surface and look black. The black color is not from dirt.
Papules. These are small pink bumps that can be tender.
Pustules. These pimples are red at the bottom and have pus on top.
Nodules. These are large, painful, solid pimples that are deep in the skin.
Cysts. These deep, painful, pus-filled pimples can cause scars.