s a gland up, there is a reason WHY that gland has come up. Often,
infection or injury on the limb, or area nearest to the gland is the cause, but there are internal problems which could cause a gland to swell, which you couldn't see. If ALL his glands are up then that points to quite a serious infection or something similar which is affecting his whole system. Just one gland, and it is likely to be something wrong in some part of his body nearest to that gland.