Can vaginal masturbation be done during menstruation?

Patient's question:

No

Doctor's answer:

Absolutely not, because masturbation during menstruation can cause local congestion, leading to increased menstrual flow. Under the influence of the hypothalamus-pituitary-ovary axis, there are endocrine cyclical changes, and the endometrium also undergoes changes during the proliferative phase, secretory phase, and menstrual phase due to the cyclical variations of estrogen and progesterone in the body. Using masturbation to induce sexual climax can lead to increased menstrual flow, dysmenorrhea, and lower back pain during menstruation.