Folliculitis is an infection of hair follicles. It’s often the result of a fungal or bacterial infection and can often resemble acne.

These pseudocysts are often seen in people who use hair removal methods like shaving or waxing. Ingrown hair cysts are an example of folliculitis. While ingrown hair cysts are possible, if you have bumps that appear near ingrown hairs, there’s a good chance that they’re actually razor bumps instead.

Razor bumps are also known as pseudofolliculitis barbae, which is a type of pseudofolliculitis. Unlike folliculitis, pseudofolliculitis isn’t usually infectious.