Acne is a skin condition that affects millions worldwide, manifesting in various forms from the mild and somewhat annoying blackheads and whiteheads to the more severe and often painful cystic acne.

Blind pimples, aka cystic acne, are painful zits that exist under the skin and never come to a head. To treat blind pimples, try benzoyl peroxide, a cold compress, and avoid attempting to pop it.

While it's tempting to try to pop whiteheads ... which can quickly reduce inflammation and pain. 6. Cysts Cystic acne is considered the most serious type of acne, McMahan says.