Every few weeks, in the.middle of the night, i suddenly feel like my throat has filled up, and when i get to the bathroom, i keep having to spit bloody saliva. It makes me cough, and feels raw at the back of my throat, plus my chest is uncomfortable, especially the centre, where its tender to the touch. The first time this happened i was admitted into hospital, but cameras saw nothing, but that was before my vasculitis dx. It hasn't happened since ive been on the pred and immune suppresant, but im now tapering my pred, so could it be a response/flare up??