This morning he was fine but suddenly turned tired and weepy, then started saying his neck hurt 'like a bruise' on the right side. He feels warm but not hot (thermometer has run out of battery) and he screamed when I accidentally touched the side of his neck and shouted that it hurt. Both sides of his neck look a bit swollen (noticed before he said anything) but he says only the one side hurts.
Now he's just teary and curled up on the sofa. Any idea what it sounds like/experience with similar?