Adult DS. He went to bed as usual last night, maybe a bit early for him. Slept until 6:30am when he got up and vomited, spent a long time on the loo. Said he felt OK after being sick and went back to bed for serval hours. Got up and was sick a couple of times during the afternoon, is now up and eating, playing XBox. Says his legs ache but otherwise feels well.
He doesn't seem to have actually been that ill in himself, so what is it?