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February 24, 2014 1:26 PM EST

Teens everywhere are smooshing their heads together in an attempt to capture the perfect selfie, and while that sounds pretty innocent, danger is lurking just around the corner: all those selfies could be causing an uptick in head lice cases.

SFist talked to a lice expert located in Scotts Valley named Marcy McQuillan who notes that though lice is usually found in elementary aged kids, she’s seen a “huge increase” in lice cases in teens this year. The obvious culprit for this anomaly? Evil, evil selfies.

“Typically it’s younger children I treat, because they’re at higher risk for head-to-head contact. But now, teens are sticking their heads together every day to take cell phone pics,” McQuillan told SFist.

There’s only one clear solution here: shave your teen’s head. That’ll show ’em.

Contact us at letters@time.com.

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