In the past month my usually healthy 21 month old son has had an painful ear infection (had antibiotics) followed by chicken pox (very spotty but no temperature) and a week later he has had sickness and diarrhoea. I took him to the doctor on Monday as after the sickness on Saturday he was incredibly lethargic and floppy although no temperature. The doctor has said it is a virus. Following a bout of diarrhoea on tuesday after his appetite picked up a bit he has returned today to being lethargic and miserable and not eating much. He has no temperature or rash. He may be just completely wiped out by illness after illness and I am off to the chemist to see if they can recommend a tonic. I am really worried about him as he is so not himself and before I cart him back up to the doctor does anyone have any experience of this ? Any advice ?