Marble size bump on my neck had it since I was 7 when I hurt my neck what could it be ?
Hello,
if I understood you correctly, the bump is related to some accident you experienced when you were 7 years old? If that's the case, the bump might be related to that injury.
Depending where exactly this bump located on your neck and how sensitive to touch the neck bump is, it also might be swollen lymph node or what's left of it after some infection you had, or that injury you mention. It's hard to say what the lump might be without some more details,
Wish you all the best,
Nicole