I have a terrible time with the "lump in throat" symptom with my anxiety. My throat feels so tight that when I swallow it is actually painful. Your not alone. My T says its because I'm clenching the muscles in my neck and throat so much that it is causing pain and discomfort. I went around like this for days and its one of the more bothersome symptoms that go along with this damn disorder. I tend to tighten up my neck as well. When I notice this happening, I am literally walking around stiff necked and then I start thinking people probably think I'm weird and then that sends me into paranoia about what others think. It is endless. Take good care of yourself