Hi,I have had this exact thing you describe. I am a 12 year health anxiety sufferer - you name it, I've had it!! To me, it is almost like a spasm in the throat - but more down in the windpipe I lasting a few seconds. It kind of takes your breath away. I try and grab my wrist to take my pulse - I was wondering if they were heart palpitations maybe?I do think this sensation (whatever it is) is linked to anxiety.Just another ailment to add to the list!!Rellie.