According to the Cleveland Clinic, acne is caused by clogged pores — but when "bacteria also gets into the pores," cystic acne can form, leading to painful pimples under the skin.
Dermatologist Dr. Joshua Zeichner tells InStyle these bumps are caused by a "structural change under the skin — a 'balloon' or an out-pouching that fills up with oil from your oil gland."
If bacteria is present, any factor that causes acne could potentially cause cystic acne. These factors include hormones, excess oil, inflammation, and clogged hair follicles.
There are noticeable differences between a cystic acne bump and a "regular" pimple. If the bump is deep within the skin with no white head, it could be cystic.
Since cystic acne is below the skin, nothing will happen if you try to pop it. Medical News Today notes that if the lump is large, soft, and painful, it's likely an acne cyst.
When you attempt to pop cystic acne, Dr. Michael I. Jacobs tells Allure, "You increase your risk of infection and scarring." Therefore, it's best to let a dermatologist treat it.
A dermatologist will confirm the best option for you, with a prescription often being essential. They may also suggest a topical treatment to help fight bacteria.