One in 10 women experience pain during sex. In fact, sometimes the pain is so severe that one woman described it like someone stabbing her.
Vaginismus has been described as the tightening of the vagina's muscles when something enters it; for example: a tampon or a penis. Few know about the condition, and shame often stops them from seeking help.
Symptoms include pain during penetration. It usually goes away after withdrawal, but not always, according to Web MD.
Some women have described the pain as a tearing sensation or a feeling like the man is "hitting a wall".
Little research has been done thus far, but doctors have linked the causes to anxiety and the fear of having sex.