The onset of menstruation is mainly influenced by the fluctuation of hormone levels in the body and has nothing to do with whether or not the clitoris is touched. Generally speaking, more clitoral touching does not directly lead to menstruation, but if you masturbate by stimulating your clitoris for a long time, it is likely to cause abnormal menstruation. If you masturbate excessively for a long time and do not pay attention to hygiene, it causes vaginal inflammation and upstream infection that leads to cervicitis or pelvic inflammatory disease, which may lead to changes in menstrual volume, menstrual color, and abnormal menstrual cycles. In addition, endocrine disruption caused by excessive masturbation can also affect the normal onset of menstruation. And according to Chinese medicine, long-term excessive masturbation, resulting in kidney yin deficiency and weakness of qi and blood, may also cause menstrual irregularities, mainly manifested as a reduction in the amount of menstrual blood or delayed non-arrival. Therefore, it is recommended that you should pay attention to keep your private parts clean and hygienic, and try to avoid frequent clitoral stimulation or masturbation.