Here's a public safety warning for those people who enjoy texting on their mobile phones: beware of texting tenosynovitis. A student in New Zealand was diagnosed with the first ever case of text-messager's thumb.

Texting tenosynovitis is a condition where the tendons along the thumb and side of the wrist are inflamed and filled the surrounding tissue with fluid. This was first reported by the Sunday Star-Times, quoting a report in the New Zealand Medical Journal.

Two other cases of the ailment were also reported in a school-aged child in Singapore and a 13-year old girl in Australia. This is clearly a situation where having too much of a good thing can also be bad for you.

The authors of the report, Emma Storr and Mark Stringer, noted that text-messager's thumb was most likely going to turn into growing trend given the popularity of text messaging on mobile phones.