Can tight scalene s cause pressure feeling jaw neck and shoulder. Hist eds3 pots GERD anxiety. Recent EKG echo normal. Paranoid it's heart related?

Not surprised if yes. Referred pain is a common phenomenon. A massage therapist experienced in working with these muscle trigger points probably can bring about changes in such pain. It is not a D.I.Y. task - you could cause trouble if it is done by an amateur. Jaw, neck and shoulder pain is worth trying this if you know a professional who claims to know the procedure. W/ a normal cardiac exam, heart is not a worry.