>>19136007I'd bet money on it being volume overload due to bearing down too much, too frequently (taking a fat shit or squats). For many people they can be very painful and potentially affect fertility. Picrel shows why the left nut is the dumb nut, venous drainage goes to the left kidney, and is most likely to cause a varicocele because of this.
Poor man's diagnosis, run your thumb and index across nut tube. If one side feels fat like worms you probably have a varicocele.
Otherwise diagnostic is ultrasound, which is cheap as fuck as far as imaging goes and will rule out anything more serious like a mass
