The study is the first to demonstrate sex differences in itch-induced scratching behavior in animals. The researchers studied mice, but the findings could apply to humans and other mammals.
The conclusion? Females scratched themselves 23 percent more often than males did.
"We haven’t investigated the underlying mechanisms of the sex difference yet, but they usually involve gonadal (reproductive gland) hormones, such as estrogen, progesterone and testosterone, either during development or in adulthood," said Jeffrey Mogil, one of the researchers.http://dsc.discovery.com/news/briefs/20060605/scratch_hea_print.html