I discovered a lump on the back of my head last night. It is about the size of a quarter and is hard not moving. It is a little bit above my neck and centered. Could this be the cause of an infection or something else? If something else, what? Thanks.

missk

Is it tender to the touch? I'm not an expert but it would help others to know if there is any pain or tenderness to the area. Could be a swollen lymph node fighting infection.