Just that really. In the morning DS (12 and otherwise healthy) will have had flu for a week. His temperature is peaking at about 102F every day (was 103 on Thursday) and he is dizzy if he tries to walk. Has to be held up when taken to the loo etc. Has vomited a few times but I think more from catarrh and/or dizziness from the fever - but has complained of tummy ache and headache too. He has times of day where his temperature is normal and he can look at his phone or a book, and I start to think he's getting better, but then he feels too ill again, and the temperature shoots back up. Is this normal flu? For exampel today he work up - temp 102. Gave him calpol and later on some ibuprofen. He was pretty groggy all morning. This afternoon with no further medication he looked better, managed some smiles, ate some toast etc. The this evening he called me in and said his head was hurting again and his temperature was 101.5F. Is it normal to have these periods of improvement followed by relapses? How much longer is it likely to last? Poor kid is so unhappy at having his Christmas ruined and losing so much of his hard-earned holiday... Should we just wait it out, or call GP tomorrow and ask for a blood test in case it's not just flu?