32 year old married male here.
Non-smoking, social drinker.
I have a lump behind my right ear in the postauricular area around 1 cm across, more flat than raised, and most prounounced when I turn my head to the left. It's not painful, not moveable, and when I hold my finger to it I can feel my pulse. I first noticed it around 11 months ago when I had a very itchy, red rash covering my ears, and there has been no discernable change in size or shape since then.
My doctor at the time said it was likely a swollen lymph node and it would go away with time. Rash went away after a couple months, but lump didn't. I've had it looked at by two other doctors recently, and had one say it was likely a cyst, and another say it looked like an anomaly of the musculature. No-one has been very concerned about it, but I can't get it out off of my mind.
Recently, I had bloodwork done because I was having problems with anxiety, and everything came back normal.
Other things which may or may not be related:
I've had lower back pain near my bottom ribs for the past 7 months primarily on the left side, with the pain referring around to my abdomen. (Thought to be a problem with muscle mechanics.)
I've had a problem with recurring sinusitis thought to be caused by allergies. (Have a CT scan scheduled.)
Any ideas as to what this could be would be greatly appreciated. Thanks.