I'm a bit unfamiliar with certain terms. Whats PCP?
Hi
Thanks for writing to the forum!
If you have always had it and it is behind both ears I would say it is normal anatomical variation of the skull, causing a mild protrusion to appear behind both ears. Hower it could also be a lump or a swollen lymph gland. It is difficult to comment beyond this without examining. Please consult your PCP once.
Hope this helps. Please let me know if there is any thing else and do keep me posted. Take care!