I recently just got back from a trip in Europe. During the trip experienced extreme itching on my scalp as well as a swollen lymph node behind my left ear. This began July 3rd. finally that Sunday it got so itchy that I figured it had to do with the shampoo and conditioner I was using so I switched it up. I noticed a difference and thought it was getting better. I came back to the states this past Wednesday and to be safe went to a walk in clinic since I live at college. The doctor checked my scalp and said it must have just been an allergic reaction. Today throughout mid day I experienced extreme hair loss, and it s only gotten worse as it got later. My scalp is still somewhat itchy and my lymph node is still swollen. I have thick long hair and it feels thing and I m very worried because I ve never had this happen before. I don t want to self diagnose myself and with it being Sunday tomorrow I m afraid I wont be able to talk to my doctor.