What is the situation of perineal tremor?

Patient's question:

Male 15 years old Mild perineal tremor It trembles after a while Has a habit of masturbation Has not masturbated in recent days But the perineum starts trembling It just trembles without other sensations

Doctor's answer:

Vaginal tremor, if it occurs during sexual intercourse, may be related to excitement factors. If it appears at other times, it could be associated with liver qi stagnation, anemia, or factors related to a weak constitution!!