Had this happen to me for the 1st time today at work. I've really have an issue with the Post Nasal Drip & constantly draining down the back of my throat. I started to research the symptoms when I came across this group. For the people that submitted their dry-like scab tainted with blood, it's almost identical to what I brought up. I managed to catch it when I felt it draining down & managed to get it out before I swallowd it. Thank you everyone for your posts & have a "blessed" day.