Rosacea may be caused by mite faeces in your pores

There are tiny bugs closely related to spiders living in the pores of your face. They have long been considered mere passengers, doing no harm beyond upsetting the squeamish. But they may be causing an ancient skin disease that is estimated to affect between 5 and 20 per cent of people worldwide, and 16 million in the US alone. Kevin Kavanagh of the National University of Ireland, in Maynooth, now thinks he has discovered the cause – and it isn't for the faint-hearted.