DS2 is 15 months old and for the past few months he has suffered from a recurrent fever. It's usually linked to a cold, but he gets really hot and is occasionally quite disturbed by it (it seems as if he's hallucinating, usually at night). He's not a particularly sweaty boy normally, much less so than his big brother when healthy in fact. But when he gets ill he just seems less able to regulate his temperature.
Is this something that children just grow out of once they're better able to regulate temperature, or should I be concerned?