Last but not least we have common skin infections. Now your bump can be caused by something else and then become infected, or it may be a sign of infection in the first place.

“If the bump starts to blister, oozes yellow or green pus, forms a yellow crust, or is accompanied by pain and swelling, it could mean it’s turning into an infection,” says Kobets.

One of the common infections is impetigo. “Impetigo is a bacterial skin infection that can have honey-colored crusts, which can sometimes happen with flare-ups of eczema or infected hair follicles,” Kobec says.

You can also have cold sores, which start as red, painful, burning, or itchy bumps and progress to fluid-filled blisters that crust over, she adds.

Chickenpox is another virus in the herpes family that commonly affects children who have not been vaccinated against it. Chickenpox is rarely just on the face and not the body, so that’s one of the major giveaways.