If you have ever brushed your hand against ... signals to the brain that trigger the impulse to scratch, temporarily relieving that itchy feeling. Pain, on the other hand, can be a sign of ...

A fundamental concept to first understand is that you do not detect pain – it is a sensation. A sensation that your brain has created – from information it receives from the countless neurons ...

Your nervous system is your body's main communication system. It sends messages from your brain to the rest ... What's more, it can help you sense pain in a certain part of the body that actually ...

When you touch something too hot or cut your finger, nerve cells called nociceptors detect ... your brain’s pain-blocking ...