The phenomenon is so common it even has a name.

MEDICINE
Today, men still only have two real options: condoms or vasectomy. Meanwhile, women have 11. What's the holdup?
If a surgeon gets too close to delicate nerves in the throat, an alarm goes off. (But no one's nose lights up.)
Eternal Sunshine of the Spotless Mouse Mind, anyone?
Their complexions became something of a scarlet letter—or an indigo letter, as it were.
Norwegian researchers think chronic fatigue syndrome may be caused by antibodies produced to fight off infection.
A new study finds more genetic mutations that explain chronic insensitivity to pain.
Bioengineered brains, limbs, and organs are being grown in the lab.
Let the zebras and tigers have their stripes. Humans have our own—they're called Blaschko's Lines.
A new scan can identify every virus a person has had using just a single drop of blood.
You don't have to be pre-med (or a fan of medical soaps) to know this iconic textbook. But did you know about the drama behind its title?
John Scott Harrison, onetime Ohio congressman and gentleman farmer, is the only person who was both the son and father of U.S. Presidents: father William Henry was the ninth, while son Benjamin was the 23rd.
The Renaissance may have been a time of great scientific and artistic innovation, but the era’s medical treatments still had a ways to go before they became safe and effective. Here are a few questionable cures a Renaissance doctor may have prescribed you
Throw away your night vision goggles. A few drops of this magic liquid is all you need to see in the dark.