I've been using tren/test and have mild acne with the majority of it on my back. I've been taking an AI (anastrozole) to combat this, but higher doses seem to actually worsen the acne. Why would this be? Shouldn't it be the other way around?

The acne seems to reduce the most if I do something like take .5mg every three days, but with higher doses I see immediate additional acne on my back. I'm curious as to why this is. (IIRC, stevesmi posted something on this topic back in the day on Elite Fitness?)

If anastrozole doesn't work, what instead would be a good remedy for acne while on cycle?