On the L side of my face, nestled right under my Zygomatic
arch there is a thickening of tissue that 'fills' and becomes a hard mass, depending on
my head position. As long as my head is upright it remains empty, if I do a headstand or sleep L side down it swells painfully. The lump is hard, discreet and nonmobile. This happened initially perhaps 6 or 7 years ago. My doctor referred me to my dentist who referred me back to the doctor, but then it stopped happening, and I stopped worrying.