Blackberry Thumb is a new term used to describe the
repetitive strain injury to the tendons in your thumbs.
Blackberry Thumb is caused by overusing your thumbs by
text messaging on mobile phone keypads.
As the use of
mobile handheld phones increases in many countries around
the world, doctors are reporting more and more cases of the
Thumbs may start to ache during at night,
but as the condition gets more severe, you may experience
sharp knifelike jabs and intense pain, whenever you text
message an email.