under the teeth & skin mostly
but it is not in all cases (perhaps serving as a device for sending/reading information ... when it comes to WHO is operating it, i can only envision the grays



in your case it could be a cist, filled with unprocessed fat
(but in this place.. on your head behind the ear, if there is no space left for the growth of it, it can then influence something, and it will manifest in some ways .. )

so observe your beahviour and you should be fine
we all do this

and remember, all what you are, is a setup, that you can see precize version of reality you wanted! otherwise, you would skipp the lessons, now you cant, you are so set.. so read in it (even our physical shapes and emotionall equipment is SET in this manner, to juice max from you!)

calmness follows