I've noticed that recently I've been spotting quite a number of acne growing on my back. Interestingly, the spots that they are growing at is exactly at the spot where I often lay my back against. As I often sit on a chair with only a side of my back touching the back of the seat, and several hours a day in fact - that's where the acne has been thriving.
Just wondering if that is a cause of concern or it would just be plainly because of stress + friction caused by the way that I sit?
While its possible Friction seems a rather unlikely a cause of acne. How bad is your back? What sort of acne is it?
Maybe its more likely to be something like a reaction to your detergent or something like that. Try switching it up or getting rid completely. Need to air your back as much as possible so avoid slim fitting clothes.
Cant really give much more advice without knowing more about it.
Good luck.