I have the same thing I just niticed it about a month ago if it doesn't hurt i don't mess with it plus your body is always changing
I HAD THAT IT WAS NOTHING BUT KEEP HANDS OF IT OR IT WILL GET SORE
Hi
Welcome to the MedHelp forum!
It is difficult to comment without examination. Lump behind the ear could be an abscess, folliculitis (hair follicle infection), lipoma (localized collection of fat), a cyst, an inflamed lymph node or a neurofibroma (localized harmless swelling in of nerve and connective tissue). You may not have been sick but local infections like dandruff or a dermatitis too can cause a lymph node to swell. It can also be a bone tumor. Do discuss this with your doctor and get yourself examined.
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!