A member asked:

Why morning boner occurs??and why it goea away after urination??

A doctor has provided 1 answer
Dr. Fletcher Derrick answered

Specializes in Urology

Full bladder and NO: A full bladder causes some pressure on the prostate and helps produce a modest level of nitric oxide, the potent Vasodilator in the body which helps with erection . When you void, it all goes away.

Answered 11/28/2017

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