There are several different types of acne, including whiteheads, blackheads, papules, pustules, nodules, and cysts.
Whiteheads: clogged pores that have closed on top, resulting in a small bump or pimple that looks white or flesh-colored.
Blackheads: clogged pores that have stayed open, despite being clogged, and have filled with debris, resulting in a small bump that is black in the middle.
Papules: clogged pores that have caused deep inflammation, resulting in a hard bump that is tender to the touch. Papules have no visible pus.
Pustule: similar to papules, pustules are tender blemishes caused by clogged pores and inflammation. However, unlike papules, pustules are filled with pus.
Nodules: infected lesions beneath the skin caused by clogged, swollen pores that grow deeper into the skin, triggering additional irritation and inflammation.
Cysts: fluid-filled sacs caused by a build-up of dead skin cells, sebum, and bacteria. Cysts grow deep into the skin and result in red or white bumps that are painful to the touch.
To determine which type of acne you have, it is best to visit a board-certified dermatologist for a professional consultation.