hello so I am around 21 years old and Ive think Ive been having perioral dermatitis but I also went to a dermatologist and about a year ago and they said I had comedonal acne so I am very confused as to which one it is and how to treat it. It is mainly around my mouth, on my chin and jawline. There are some flare ups around my forehead but not as stubborn as the ones pictured. Most of the pimples around my mouth have pus in them and can be popped as well.