Suggest Remedy For Swelling In Entire Left Side Of Head

Hi, i have a problem. The entire left side of my head appears to be swelling or enlarging. It has been ongoing for close to two years now. I first noticed this a couple years ago when my jawline on the left side appeared to be lower than the other. I've also noticed a burning or stinging sensation in the affected area and then i noticed more gradual swelling. The pain comes and goes. Ive recently had pain in my forwhead area on the left side and ive noticed an enlargement there around the frontal sinus on the left side and around my temple. My upper gums are also enlarged on the left side but no pain or abcess is present. What could this be? Ive seen several specialists in the past including ear, nose, and throat doctors and that led to me being diagnosed with masticatory myalgia. Please help me.