What is Acne
Acne is a condition of the skin that shows up with different types of bumps.
Teens get acne because of hormonal changes that come with puberty. If your parents had acne as teenagers then it is more likely that you will, too. The good news is that, for most people, acne goes away almost completely by the time they are out of their teens.
The type of acne that a lot of teens get is called acne vulgaris . \this is the common type of acne
It usually shows up on the face, neck, shoulders, upper back, and chest.
The hair follicles, or pores, in your skin contain sebaceous glands ( oil glands). These glands make the oil sebum, that lubricates your hair and skin. Most of the time, the sebaceous glands make the right amount of sebum.
As the body begins to mature and develop, though, hormones stimulate the sebaceous glands to make more sebum.
Pores become clogged if there is too much sebum and too many dead skin cells. Bacteria (especially one called Propionibacterium acnes) become trapped inside the pores and multiply. This causes swelling and redness — the start of acne.
If a pore gets clogged up and closes and bulges out from the skin, you’re left with a whitehead. If a pore gets clogged up and stays open, the top surface can darken and you’re left with a blackhead. Sometimes the wall of the pore opens, allowing sebum, bacteria, and dead skin cells to make their way under the skin — and you’re left with a small, red bump called a pimple (sometimes pimples have a pus-filled top from the body’s reaction to the bacterial infection).
Clogged pores that open up very deep in the skin can cause nodules. These are infected lumps or cysts that are bigger than pimples and can be painful. Occasionally, large cysts that seem like acne may be boils caused by a staph infection.