Acne all over body and oily skin, connected to ibs?

[mknpet]

Over the past couple of years I've started to develop severe acne all over my body. Mostly small whiteheads, with occasional cysts. I get it everywhere, back, shoulders, chest, arms, stomach, butt, even on my legs. My face is actually the one place that has the least amount of acne, and remains pretty clear. My skin also gets pretty oily throughout the day. It all started in my mid-twenties, I never had a lot of problems with my skin before. It also developed at the same time I started to develop symptoms of IBS-C, which I have seen several doctors about. All blood tests I've had come back normal. I have changed my diet many times and tried eating very strict clean diets with no dairy, sugar or gluten and it never makes a difference, in my ibs or acne. Help?