A TEENAGER and his worried mum are hoping doctors can solve a horrifying mystery - why he cries tears of blood every day.

A TEENAGER and his worried mum are hoping doctors can solve a horrifying mystery - why he cries tears of blood every day.

Calvino Inman, 15, weeps bloody tears up to three times a day, with some bouts lasting an hour.

The Tennessee teenager and his concerned mother Tammy have now appeared on national TV in the USA in a bid to get to the bottom of his problem.

- Watch the video for more.