Younger women, for example, "report greater pain sensitivity during the premenstrual period."

Disordered sleep might lead to lower levels of serotonin, which results in increased pain sensitivity.

In neurology, pinching can be used to determine pain sensitivity for a certain area of skin.

But participants had no change in their pain sensitivity to light touch or heat after smoking any of the cigarettes, the study shows.

A negative correlation was found between pain sensitivity and itch sensitivity.

Six of the eight veterans with the disorder showed a 30 percent average decrease in pain sensitivity after viewing the scene and getting a placebo.

No change in pain sensitivity appeared in seven of the eight other veterans, even with the placebo.

In addition, researchers say the meditation training seemed to have reduced general pain sensitivity even after the experiments were over.

The researchers sought to determine if weather-induced changes in pain sensitivity varied with climate.

Primary hyperalgesia describes pain sensitivity that occurs directly in the damaged tissues.