I seem to have these symptoms during what I think are episodes of acid reflux. My chest will feel like a lump is growing in it and that is followed by a wave of nausea. This is usually a warning about what will happen next. I break into a sweat and then goose bump. Sometimes the goose bumps precede the sweats. Occasionally, but not always, burning fluids, seemingly coming from my chest area, accumulate in my throat.
During these episodes, I feel that I am near to passing out. Fortunately, this has not happened but I do feel very unsteady as the "wave" hits me.