A second inconclusive CT scan now followed by a late night insertion of an intracranial pressure monitor. One decentish night's sleep with what looked to the laywoman to be fairly normal pressures.
One 39.5 temp at 6 am so a bit of a rude awakening. Everything else looking ok, so the dreaded bloods need to be taken at some point.
ICP monitor will stay on until she's had a headache. Probably an infection somewhere but intermittent nature of the problem doesn't shriek shunt infection, everything else seems fine so we may be here for a while trying to figure things out.
Meanwhile on the home front, Mog and our sitter were editors by a police raid on our neighbours in the wee small hours. She can't sit tonight; I wonder why?