Lump behind ear...

[Lovbabynat]

Several years ago I noticed a small bump behing my right ear lobe. It is on the crease behind the lobe. I could actually move it back and forth like a Ganglion cyst. So I left it alone. It has always been there. Doesn't get bigger or smaller and doesn't hurt. All of a sudden over the past couple of days it has grown 3-4 times it's size and is very sore. Is this something I should be concerned about? Can a Ganglion (if that's what it is) become swollen and sore like that? That's two questions but thank you to anyone who can answer.

[katie8888947]

Hello guys, I just want to get some advice from some people. Well about 5 years ago maybe more at the age of 9 I found a lump behind my right ear it was movable and was absolutely painless I forgot about it and didn't tell anybody because I was so young. Now I am 13 and still have this lump behind my ear I just remembered I had it until yesterday it's still movable and painless I really want to know if its nothing serious because I am freaking out so bad I need to clear my thoughts
Thanks guys :)

[katie8888947]

Hello guys, I just want to get some advice from some people. Well about 5 years ago maybe more at the age of 9 I found a lump behind my right ear it was movable and was absolutely painless I forgot about it and didn't tell anybody because I was so young. Now I am 13 and still have this lump behind my ear I just remembered I had it until yesterday it's still movable and painless I really want to know if its nothing serious because I am freaking out so bad I need to clear my thoughts
Thanks guys :)

[ENTMD]

My first thought is a dermoid cyst.  These don't go away unless surgically removed and can get infected from time to time.  Your description would fit this.