Vaginismus
Vaginismus is the term used to describe recurrent or persistent involuntary tightening of muscles around the vagina whenever penetration is attempted.
The main symptom of vaginismus is tightening of the vagina, which can make penetration difficult or even impossible.
There are many reasons why the vaginal muscles tighten against a woman's will. But it isn't always clear each time why this might have happened.
You should see your GP if you have symptoms of vaginismus.
Treatment for vaginismus will largely depend on what's causing it.