Hi i have a question, my niece has a red bump Hard to touch on Her right buttocks And another very small one on Her right but cheek, this Is the second time it happened, the First one also came out in the right upper butt cheek And It was somewhat painful, she Is four years old And Is in preschool, i Just wanted to know what it can be, i did Google some information And have a idea what it can be but Just wanted to ask, also can wearing tight clothes cause this? She s been fine Other then that, she has been afebrile.