I have a 3 year old that 3 weeks ago had a very high temperature of 41 and needed to be collected from nursery and given calpol to reduce his temperature, which we managed to do. The following day, the same thing happened and again we managed to get his temperature down. Ever since then he seems to be a bit up and down. He seems to eat well at breakfast and is reasonably perky, he then refuses lunch and then deteriorates in personality and tiredness as the day progresses. He is often falling asleep in the afternoon (which he does not normally do) and he asks to go to bed in the evening (which again is not normal). He doesn t want to go outside and wants to just lie on the sofa in the afternoons. He is very pale and cries about every minor issue that happens, which is very out of character. He normally eats very well at every meal and is bursting with energy. He is a completely different child and I am now starting to worry that there is an underlying medical issue that perhaps is not immediately obvious to us?