Purple coronal ridges with pumping

I did search before posting this thread. Found a single hit, however the problem was not addressed in that thread: I am getting scared to pump - purple coronal ridge

I tried air pumping, in fact this is my first week of doing so. Slowly building the pressure from 2 Hg for past 4 days. Hit 4 Hg today for 10 minutes. However, noted my glans was slanting against one of the corner (not forcefully) when gradually the coronal ridges becomes purple. It resolved within a minute after taking my penis out after 10 minutes.

Anyone experienced this before. What this actually indicates?

It is lowered circulation - it happens commonly with several types of PE.

The more cut-off the circulation is (i.e. the higher the pumping pressure) the shorter the set time must be.

The parts of the glans that are pressing into the cylinder wall are more affected because that mechanical contact is pressing the blood out of them in addition to the pumping generally lowering the circulation of the whole penis.

Don’t worry about it too much. Keep the set times short, and restore circulation immediately after each set. Then it isn’t a problem.

Yeah shouldn’t be a problem, provided you keep your sessions around 10 minutes and do massages and erection exercises in between.

Good explanation, thank you.