High temperature - when do you go to the Dr?

[Indadhanu]

I go to the GP/ER if DD is really suffering AND the temp is rising extremely quickly AND is over 39oC AND if I can't bring it down with the usual tricks - paracetamol, hydration, rest, tepid bath.
If the paracetamol can't bring it down with 30 minutes then off to the GP/ER. I know fevers are a normal body function to deal with illness, but I worry with a temp that rises very quickly and is persistently high after trying to bring it down.

I've only really had to rush her down twice, and they did the same thing each time, give her panadol, chuck her in a tepid shower for 30 minutes and administer fluids if she's very dehydrated. I can do that at home, but I felt more comfortable being somewhere 'medical' just in case because they were quite bad fevers (rose from 39oC to over 40oC in 10-15 minutes each time) and she was very weak/exhausted and couldn't walk, her legs kept collapsing underneath her.

I guess it depends on how she is responding to the fever too. I would probably go a bit earlier if the temp was a bit lower but DD was drowsy, hard to wake up etc. When my DD has a high temp that is persistent, but she seems ok and to be dealing with it I'm more inclined to just deal with it at home.