Hysteria? Or the courage to face the obvious, in the face of ridicule and sometimes scorn. Men, on the other hand, often refuse to acknowledge pain and suffer in silence. Don't forget, women live longer than men...maybe this explains why. We seek help for our medical needs.
I also read somewhere that men have more pain relieving hormones than do women. I seem to recall thinking that it made sense, given that men were always in battle years ago or else hunting. Having unbearable pain while in these life or death situations could certainly mean "end game" for those involved in such battles/hunts. Whereas women didn't face such threats so didn't need the same level of pain killing hormones.