 [ Symptoms ] behind my ear where the jaw bone is at is constantly itchy on both sides of my neck  only by pressing under both my ears does it relieve the itchy ness what could this be from [ Disease ] it would not be prudent to blindly guess so my suggestion to you is to see a medical professional or dermatologist so that you can have his itchy area properly examined diagnosed and treated there can be sooooo many different causes so it is going to take a hands on evaluation to solve this mystery