Hi there, your problem is more common than you think. I have the same problem, and I have been to a doctor, they told me it is dermatitis. When it gets real bad I use a hydrcortisone 1% cream its called derm aid and can be bought over the counter at the chemist. I also put baby oil on the area every day in the shower, it dosen't stop it but it helps to limit the out breaks. As I feel the skin in that area is senitive to the secreations. This could be due to a rich diet. I hope this helps you. If you are still unsure go to the doctor, its worth it. Tanleetris........

First thing - never be afarid to go to your docs they would have seen hundreds of arses before! Iv been to mine about eight times with a very similar problem - mine also becomes really painfull and feels like me arseholes going to drop out! Iv tried changing my diet and all the usual stuff, but one thing I know works and I know this sounds strange is sunbeds! - basically went I worked in duabi for a couple of months I noticed the problem went quickly - so when I returned to the cooler climent of the northern england it returned and I went on sunbeds and sunas the problem is now undercontrol.