My 7 year old was lethargic on Wed, sick once in the middle of the day, lay around looking sad for the rest of the day. He perked up a bit on Thurs, but didn't eat much. Friday we visited family - he perked up a bit but again didn't eat or drink much. Saturday he was again lethargic and no eating or much drinking. Today he has been asleep for two long sleeps, has eaten maybe 1 slice of bread all day, and not drunk much. He is looking pale and very tired. He has no temperature. He did (with a lot of encouragement) drink about half a mugful of water- has had maybe 1 mugful in total today.
He is also complaining of stomach pain - but he gets mesenteric adenitis (swollen stomach glands) when he gets a virus.
I was inclined to let him just sleep it out - but DH is worried he may be getting dehydrated. Any advice from the wise ones of Mumsnet ?