DD is 2. In the early hours of Tuesday she started spiking a temperature. It is regularly going up to 40. Fortunately, it responds well to Calpol, but as soon as that wears off her temperature goes back up again. She has been a bit brighter today with some 6 hour gaps between spikes of her temperature, rather than 4 hourly as previously. She has no other symptoms- no rash, no cold symptoms, no vomiting, poo is a little soft but mostly normal. . She is drinking lots and eating a little. When the temperature abates she is quite happy to play almost as normal. The only discomfort she is expressing is when her temperature rises she says ‘ouch’ a lot, but then is quite non specific about her arms or legs hurting.
Is there any specific reason that I should be worried or get her medical attention?