Hey all. My skin is pretty clear for the most part, but a couple times a year I will start breaking out hardcore and all the acne will be in a certain place, like my most recent one, everything was on my cheeks and jawline without any on my forehead or t-zone area. The breakout will last a few days and then my skin will start to clear up again. What do you think is the cause of the breakouts?

PS: It doesn't seem to be related to my period or stress, and my diet and skincare routine are consistent