Women experience chronic pain longer, more intensely and more often than men, a new study has found.
"Chronic pain affects a higher proportion of women than men around the world," said Jennifer Kelly of the Atlanta Center for Behavioral Medicine.
"We need to encourage women to take a more active role in their treatment and reduce the stigma and embarrassment of this problem."
Chronic pain conditions that are more prevalent in women than in men include fibromyalgia, irritable bowel syndrome, rheumatoid arthritis and migraines, said Kelly.
Hormones may be to blame for these differences, said Kelly, who added that estrogen clearly plays a role in conditions such as migraines. Rates of other painful conditions increase for girls as they pass through puberty whereas rates for adolescent boys are stable or rise less steeply.
"Pain perception does vary according to the menstrual cycle phases in women with chronic pain," said Kelly.
"For example, temporomandibular [jaw] pain, or TMJ, is highest in the pre-menstrual period and during menses."
As for treating pain, studies have shown men and women experience different side effects of analgesic medications.
"Genetic and hormonal differences may be the main reason for any differences, but it's becoming increasingly clear that social and psychological factors are also important," said Kelly.
"Women tend to focus on the emotional aspects of pain.
"Men tend to focus on the physical sensations they experience. Women who concentrate on the emotional aspects of their pain may actually experience more pain as a result, possibly because the emotions associated with pain are negative," she said.
The findings were discussed at the 118th Annual Convention of the American Psychological Association.