There's a whole series of physical therapy for prostatitis, not that
you have prostatitis, but that therapy deals with releasing tension in
the pelvic girdle.  Which can get extreme in the best of circumstances.
And which, I suspect, was begun or increased with surgery and all the
following cascade of effects.  So I was just reminded of this and
wondered if a physical therapist could make a difference.

Glassman:

I feel different too. I had the surgery 14 months ago. Sex is not the
same, that's for sure. Vitamin V is of no help yet. Injections work to a
degree. Sometimes there are painful orgasms, or what used to be orgasms,
like a pole being pushed into your butt where the prostate used to be.
This seems to be getting a little better. As for hemmoroids, I had a
colonoscopy a few months ago and there were some internal ones. I feel
them at times when I attempt to have sex, especially during what was
once a pleasurable orgasm. This seems to be getting somewhat less
painful too. I think that they are going away, although not totally yet.
There are probably some nerves in the rectum that can cause a spasm. I
used to get these even before the surgery, although very rarely.
Sometimes when I'm tried from standing or doing yard work around the
house, I feel some soreness around that area too. Sitting for extended
periods can cause some soreness too. I'm not sure if it's the internal
scarring being pulled or the internal muscles being a bit sore from the
activity or pressure. The urinating part is not a problem as I go like a
race horse. No leaking now either. I was in control from day one after
the catheter was taken out, except for a few dribbles from sneezing, or
by some other event when I was not paying attention. All in all there
appears to be different strokes for different folks with these SE's as
everyone is wired a bit differently I guess. I hope this helps answer
some of your concerns.

B.A.

Anything is possible, but another possible explanation is sciatica,
either because of local pressure on the nerve somewhere in your butt or,
more likely, some degeneration of a disc in your spine.   You should
talk to your doctor about it.  If you are beginning to have a disc
problem, it can be controlled by physical therapy and proper posture.
Also, if you can lose any weight, you shoud do so.

It is estimated that something like 85 percent of us have back problems
at some point in life.

I've had serious back problems since long before my surgery,  including
tingling like yours at different times.  That was the least of it by
far.  I seem mostly to be able to keep it under control with NSAIDs and
appropriate exercises, so I can still function.

Like you, I find it easier to maintain an erection when vertical, but I
think that has been getting a bit better with time, albeit very slowly.
 I'm sure that in my case, it is partly some sort of "performance
anxiety".  One strange symptom I've noticed is an apparent change in
bowel habits that leads to plumbing problems.  I won't go into the gross
details, but I sometimes wonder if my colon has expanded to fill the
empty space left by removal of the prostate.  More likely it is just
some change associated with diet and aging.  Or it may result from the
NSAIDs I take to control my spinal problems.

Remember that as you get older, things happen to you in any case.   It
is easy to attribute it all to your surgery, but sometimes that is too
convenient an explanation.  The tingling I think is worth at least some
minimal followup because it could be a harbinger of things to come.
Nothing life threatening, but something that can be unpleasant if not
controlled.