Skin problem on both cheeks. (photo)

On both side of my cheeks, at exactly the same places (Where my molar tooth are) I have problems with my skin. I have those wierd pimples that open and then re-grow to a size of 5mm to 10mm. They give out regular looking pus. Things i've tried: - I disinfect them everytime they open. - I started trimming instead of shaving I'm a bit afraid it may be something serious because it is the same areas over and over again for six months now. I hope someone can help me.

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