Our expert says:
Night time erections are usually a sign that everything is normal physically and one of the questions we ask patients if they complain of impotence ( as the reason can then be psycologically or due to stress or relationship problems) If you don't get night time erections and it disappears with a change of position there could be a problem with either the nerve supply or the blood supply to the penis - thus a physical problem. I think it will be worthwhile to get an evaluation by an urologist.
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