Scratching releases serotonin, making you itch more
![scratching an itch](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2014/10/Itch_free.jpg?fit=860%2C460&ssl=1)
Scratching an itch releases the chemical messenger serotonin, which can increase itchiness.
Orrling and Tomer S/Wikimedia Commons (CC BY-SA 3.0)
Scratching an itch releases the chemical messenger serotonin, which can increase itchiness.
Orrling and Tomer S/Wikimedia Commons (CC BY-SA 3.0)