G'day sir. I'm Fabio, 36, from São Paulo [Brazil].
Well, it's yet another of your old cases of pea-sized lumps behind the ear... Can't say mine's painful. It's not movable either, but relatively solid in consistence; skin-colored, and hardly discernible but to the touch.
There's been no recent infection cases -- at least none worth recollecting --, and I experience no other concomitant symptoms [i.e. no headaches, tiredness, no nothing]. Going by my description, should there be reason for alarm?