A member asked:

I noticed a bony lump on the top of my left shoulder bone. not paining but it's grinding when rotate the shoulder. i lift weights. cause for worry?

A doctor has provided 1 answer

Prob AC joint: The AC joint is on the top of your shoulder, about 2 inches from the outside edge. I suspect this is what is bothering you. It is easily irritated by repetitive movement and strain. It would take an exam to know exactly where your problem is. Back off on your lifting and try some ibuprofen. If it doesn't go away, see your doctor.

Answered 5/22/2017

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