Acne
Acne is a common skin condition that affects people of all ages. It is caused by a combination of factors, including excess oil production, clogged pores, and bacteria. Acne can appear on the face, chest, back, and shoulders.
There are many different types of acne, but the most common ones are:
- Whiteheads: Whiteheads are small, closed bumps that appear under the skin.
- Blackheads: Blackheads are similar to whiteheads, but they have an opening on the surface of the skin. The opening is filled with sebum and dead skin cells, which turn black when they are exposed to the air.
- Papules: Papules are small, red bumps that are slightly raised above the skin.
- Pustules: Pustules are similar to papules, but they have a white or yellow center filled with pus.
- Nodules: Nodules are large, painful bumps that are deep under the skin.
- Cysts: Cysts are large, pus-filled bumps that are the most severe form of acne.