Scratching an itch does indeed just make it itch more

Well that’s settled. You know how your mom always told you not to scratch that mosquito bite because that just makes it itch more? Your mom was right, and now we have the science to prove it.A team of heroic scientists at the Washington University School of Medicine in St. Louis just published a study in Neuron confirming the old wives’ tale. Turns out the biology behind the phenomenon is rather simple. And sort of surprisingly involves serotonin, the happy hormone.Zhou-Feng Chen, the director of the school’s Center for the Study of Itch, describes it well, “First you scratch, and that causes a sensation of pain,” says Chen. “Then you make more serotonin to control the pain. But serotonin does more than only inhibit pain. Our new finding shows that it also makes itch worse by activating GRPR neurons through 5HT1A receptors.”Those complicated looking acronyms basically refer to the way that the nerves throughout your body communicate with your brain. Scientists figured out that these neurons and receptors were involved by doing itch tests on two sets of mice: one normal group and one group that couldn’t produce serotonin. When they injected an itchy chemical into their skin, the ones without serotonin simply didn’t scratch as much. Crazy, right?Well, this information is also useful. If you get a mosquito bite or poison ivy or whatever, don’t scratch it. Smear anti-itch chemicals all over it instead.

via Scratching an itch does indeed just make it itch more.

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About steventorresramos

I have over (24) years of Computer Aided Drafting & Design experience and over (16) years of IT experience. After graduating high school I attended a Technical College and earned an Associate Degree in Drafting & Design. I then enrolled at the University of Puerto Rico where I earned an A.S. in Civil Engineering Technologies. While attending the Univ. of Puerto Rico I worked as a freelance Drafter for a variety of architects and engineers. During my senior year I began to work for the firm Planning Management & Development in Ponce, Puerto Rico. Two years later I was offered the position at Mario Corsino & Associates, which later became InterGroup a medium size Civil Engineering, Architectural and Planning firm in Bayamon, Puerto Rico. At InterGroup I became assistant chief drafter where I was responsible for 20+ drafters & civil techs, and this is also where I began my IT training. In 2000 I decided to move to St. Petersburg, FL where I was hired as CAD Manager at Advanced Engineering & Design a small Civil Engineering firm established in 1998. Currently still employed by Advanced Engineering & Design I’m now the CAD/IT Manager. I have also continued to expand my knowledge base in both the IT & CADD fields through continued training, certifications, and attending Autodesk University. I’m currently an Autodesk Certified Professional proficient in AutoCAD, Civil 3D and various other Autodesk products. I have been the President of the Tampa Bay Autodesk Users Group (TBAUG) since late 2007 and a member of Autodesk Users Group International (AUGI) since 1996. I have an A.S. Degree in Computer Networking , a Bachelors of Applied Science in Technology Management and currently finishing work on my Masters in Computer Information Systems. I’m a licensed drafter in the US Commonwealth of Puerto Rico, and a Microsoft Certified Professional. I hold certificates as a Microsoft Certified IT Professional: Server Administrator, Cisco Networking Associate Professional and Linux Administrator.
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