 [ Symptoms ] what causes acne on the scalp  there seems to be a correlation between having walnuts or pecans on my cereal in the morning and developing painful acne on my scalp is there a correlation if not what else could be causing the acne [ Disease ] hi go get yourself some acidophilus capsules these will put back the good bugs for you what you have left just keep in your fridge there ok for a few years also get some good natural yogurt into you more good bugs from that see how you go good luck