People are Poor Communicators When it Comes to Pain During Sex

Sex should be fun, but for many people pain is not. Nevertheless, sex sometimes surprises us with a side of pain. It might be fleeting–from a lack of lubrication, an unexpected muscle cramp, some chafing or pinched skin, or it could be the result of a more serious medical condition. But whether it’s from shame or… »7/06/15 8:30pm

Why do paper cuts hurt so much, and what do they have to do with lobsters?

As SciAm's Ferris Jabr explains in the video up top, the short answer is: nociceptors. Many animals have these sensory neurons. Some animals have weird ones. Take naked mole rats, for example — NMRs have mutated sodium channels that limit physiologically "normal" nociceptor firing, thereby blunting sensations of pain. »11/08/12 3:20pm

Scientists created a pain measurement scale by burning the hands of women in labor

In the 1940s, a group of doctors at the University of Cornell set out to create a unit of pain intensity. Using the "dol" as a unit, the physicians created a 21-point quantitative scale, but through unusual means — testing pain reactions on medical students and women in labor between contractions. They did this by… »4/11/12 2:00pm