Nbc Nightly News
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Why Scratching an Itch Really Does Make You Itch More
Posted
October 31, 2014
Views
1,676
Likes
7
Comments
1
Engagement
0.48%
October 31, 2014
1,676
7
1
0.48%
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0:23Now PlayingResearchers at the Washington University School of Medicine say the minor pain of scratching an itch produces serotonin, the "pleasure" hormone.
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