My 5 year old has what I think is a swollen gland on one side of his neck. It's very visible, about the size of one of those little bouncy balls you get in party bags (that's the only comparison I could think of). I noticed it about 3 days ago but no idea if it's been there longer.
He's had a recent virus and has been a bit tired but otherwise ok.
I'm going to phone docs tomorrow but does this sound like anything to worry about?