at times within the past month; when I yawn. I get an almost choking type of spasm that works from my collar bone down through the surface of my chest and makes it difficult to breath. Just short of painful but enough to concern me. I have chronic rinitis and a full septal removal and am easily effected by differing allergins as I grow older... but I want to rule out a vascular or heart problem before I go back to a doctor for allergies again. Im a retired service connected Army Veteran with a fusion of the two vertibrae below the swivelpoint of the neck and am diagnosed also with TBI, PTSD and Scyzofrenia (bad spelling) so am on 1.5 tablet daily, Celecobix 200 mg x 1 per day, Sertraline, Loratidine 10mg. Thank you