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A member asked:

Please explain what do rhythmic movements in the scrotal sac imply?

A doctor has provided 1 answer
Dr. James Lin answered

Here are some ...: The up and down movement of bilateral hemiscrotums is a normal phenomenon as you may see in front of a mirror, which results from the contraction of cremasteric muscle extended from abdominal wall muscle - transverse muscle, and may widely vary in its degree and pace among men with their activities and environment temperature. You may see a quick jerk-up movement upon coughing or sneezing.

Answered 7/4/2014

3.9k views

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