I experience edema quite often after 3 or 4 sets. It used to be more of a problem for me, which I’ll explain, but after growing and learning a bit, I’ve found ways to minimize the problem and get to a point where I get the job done and get 5 or 6 sets in a day. One trick (if you have the time) is to unwrap and take a 10 or 15 minute break to let it subside. Bib advocates wrapping once and staying that way, which can be a problem if swelling under the skin is an issue.
Other people’s mileage may vary, but I believe edema is more of a problem if you have a small or varied flaccid hang. This, regardless of how well you wrap, because it makes smaller guys have to tighten the hanger down more (due to less meat bunching in front) which leaves more skin between the glans and hanger. More skin, plus increased pressure due to less blood flow, and you have a great recipe for swelling.
I’ve come to this conclusion after years of hanging experience:
I started out very much a turtled-grower with around 1.5 inches of flaccid and not much girth, and constant swelling in the skin in front of the glans while hanging (had to overtighten all the time to avoid glans pain). Over time my flaccid has become longer and girthier with around 3.5” length (7” when I pull it out and wrap), and girth quite close to what I am erect (though never measured).
This larger flaccid is only the case when it’s been a few hours since hanging or sex/masturbation. Trauma from the hanging session or sex does often make me shrink up (length and girth) for a while. This then leads to problems getting the shoulders right in the hanger, and more skin bunching in front because I have to tighten it more because I have less meat to grab. The tightening part is key, since when my flaccid is girthier, I don’t have to tighten very much at all, and only a bit of skin sits in front of the hanger (BTW: I hang with 15 - 18 pounds, so definitely not hanging a feather from my dink!)
So, on my first set or two of the day, my flaccid is pretty much semi erect proportions, whereas the trauma from hanging makes me get skinnier and more retracted as the sets go on. This also happens for an hour or so after sex/masturbation, then my flaccid starts to swell up to what I now consider as “normal”. When I’m turtled, I have to plump my penis up in order to have a successful hang with no pain and minimal edema.
In a nutshell, I think edema is more of an issue with flaccid girth leading to skin bunching and over-tightening issues. A lot of the complaints I seem to read involve guys who claim to have a small flaccid, or from uncut guys who don’t follow or understand the instructionals for successful hanging from experienced uncut members.
Have you tried unwrapping and jelqing a bit between sets? I rarely find even pronounced edema stops me from doing a set and it always disappears within a few hours, even if some leftover redness remains for spell.