I have a hard ball inside of back of neck, at the top near the skull, about aligned with the spine, it feels like a bone. should i be worrying?

Worry no eval yes.: Many times this can b a cyst of some sort, or may b a scar from an old injury u may not even remember. If any neck injury in the past may have pulled off a small part of the growth plate at the tip of the spinus (sp), ; it grows as u do over time ; now u just noticed it. U would remember the episode, like injured diving in shallow water. 4 peace of mind c ur pcp. Best bet is a cyst, many types.