iPod-itis

How often do I get to name a new disease?

Music fans may enjoy the ability to spool through 10,000 songs on their iPods, but medical experts warn that jumping from tune to tune has its risks.

Carl Irwin, from the British Chiropractic Association, said: "This is a really serious problem. The action needed to move the wheel on an iPod is totally unnatural and effectively separates the joint in the thumb every time you use it.

"This causes inflammation in the thumb or fingers and can be very painful. We have also seen cases of iPod users where the problem has spread to their elbow and neck."

Mr Irwin said he expected to see a rise over the next six months of patients complaining of symptoms typical of repetitive stress injury (RSI). Children using their players for extended periods could be storing up problems for adulthood as their joints were still growing, he added.

Apple, the maker of the iPod, has refused to comment on the warning. The company also faces pressure from American health experts who share the same concern over potential RSI risks.