I see them all the time in my mouth. I get them from my meds and have them all the time. When I eat spicy things or things that are too hot I get them more often. Something to do with my meds bringing my veins and capillaries close to the surface... I didn't listen really well when they explained it. I get smaller ones on my legs and arms, but those aren't too often.I had to Google those and OUCH!!!! Also.... DO NOT GOOGLE IMAGE THAT. I saw one that was a literal hole and it was so gross and I almost puked.
I never pop them and they go away on their own.