My son is a swimmer and just had a hpv #2 and flu shot and now has a little nodule or cyst between his collar bone and neck. Could these events be related. He said the bump hurts when it is touched or he moves his shoulder and he has no injury in the area. It is not on the collar bone, it seems independent and it formed a day after his shots and well-check.
Asked On : Thu, 25 Oct 2012