Pretty interesting theory on lymphatic circulation...I would think its more hormonal and because of this the body produces more oil than it can get rid of and thus the clogged pours and the sebaceous cysts or cysts for that matter ( Acne as well to those that have acne).
I actually tried accutane and while it didn't clear the cysts (it doesn't work on these types) it did slow down my oil production and I went 2 years without getting new ones. But, as of late, I've been feeling a lot more oily and a few smaller ones have been sprouting up.
I have a feeling the key is to drink water (something I definitly don't do enough of). Its a natural cleanser....
I hope this works for you!!! If it does, that would be great!