Chocolate is the culprit for me as well. Sometimes sugar too, but, not as frequently or as much as chocolate (but the acne seems subtly different from the chocolate one).
Out of curiosity, does chocolate have any other effects on you besides the acne? Like easier bleeding/blood thinning? Or other inflammation besides acne? It has more than one effect on me and I surely can't be the only one observing it.
I consume chocolate in the evening and do sometimes clear walking tracks before breakfast, which often involves scratches. So I would expect to have noticed wounds bleeding for longer than usual.
