i think that he should go to the doctors it may only be a scyt but there is still a chance it could be somethink else
To me, it is a cyst. Does it feel like it has fluid in it? Is it raised above the skin? Although with pain involved, I'd go to the dr. and have it checked out. If anything, some pain relief
Hello...It is most likely a swollen lymph node. It is a sign of some sort of infection. I would definetly make an appointment with his doctor and sooner than later. Hope this helps!