For a couple of nights we have undressed my DC in the morning to find little rashes which we were obviously concerned about. The GP was stumped. It now transpires it's bites. We've been away for a few days and nothing, then back in their own bed last night and as you can see, they were ravaged. I'm absolutely beside myself. We've got washed all the bedding, hovered the room....I wouldn't hesitate to get rentokil out but that we have no idea what's causing it. If anyone has any ideas what it might be, please help.