Psychogenic ???: The penis is wired such that it can become erect at any point from birth onward. What you mean by psychogenic is not clear, but a 12 yo can certainly have an erection.
Answered 4/2/2018
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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