Doctors seeing more cases of 'smartphone thumb'

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Doctors are seeing more people with hand injuries and pain caused by repetitive use of smartphones. (KABC)

Doctors warn they're treating more and more cases of "smartphone thumb."

It's caused by the force and repetitive motion of typing on the screen.

Doctors say this leads to pain and eventually arthritis.

The formal name for smartphone thumb is tendinitis.

Researchers say to prevent it try using the voice-control feature on your phone.
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