Lots of things: Stress, medications, poor technique, frequent masturbation, low hormones, infections, diabetes, certain tumors, and many other options. Most of these issues can be evaluated and treated. Start by asking your family doctor.
Answered 12/9/2016
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A doctor has provided 1 answer
8 doctors weighed in across 2 answers
A doctor has provided 1 answer
9 doctors weighed in across 2 answers
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