N94: Pain and other conditions associated with female genital organs and menstrual cycle

N94.2: Vaginismus

The vagina is tubular and leads from the outside to the uterus. There are muscles around the vagina. These muscles can narrow the entrance of the vagina when they contract.

In your case, these muscles are contracting vigorously without you consciously controlling them. This kind of thing can happen when touched or when something enters the vagina. This could be a finger, tampon or your partner’s penis, for example.

There is a physical reason for your muscles clenching up. Various conditions or physical changes can cause the muscles around the vagina to vigorously contract when touched.